The ap_some_auth_required function in server/request.c in the Apache HTTP Server 2.4.x before 2.4.14 does not consider that a Require directive may be associated with an authorization setting rather than an authentication setting, which allows remote attackers to bypass intended access restrictions in opportunistic circumstances by leveraging the presence of a module that relies on the 2.2 API behavior.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2015-1666 advisory.

    - core: fix chunk header parsing defect (CVE-2015-3183)
    - core: replace of ap_some_auth_required with ap_some_authn_required       and ap_force_authn hook (CVE-2015-3185)
    - core: fix pointer dereference crash with ErrorDocument 400 pointing       to a local URL-path (CVE-2015-0253)
    - mod_lua: fix possible mod_lua crash due to websocket bug (CVE-2015-0228)

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the versions of the httpd packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - The log_cookie function in mod_log_config.c in the     mod_log_config module in the Apache HTTP Server before     2.4.8 allows remote attackers to cause a denial of     service (segmentation fault and daemon crash) via a     crafted cookie that is not properly handled during     truncation.(CVE-2014-0098)

  - A race condition flaw, leading to heap-based buffer     overflows, was found in the mod_status httpd module. A     remote attacker able to access a status page served by     mod_status on a server using a threaded     Multi-Processing Module (MPM) could send a specially     crafted request that would cause the httpd child     process to crash or, possibly, allow the attacker to     execute arbitrary code with the privileges of the     'apache' user.(CVE-2014-0226)

  - It was discovered that the HTTP parser in httpd     incorrectly allowed certain characters not permitted by     the HTTP protocol specification to appear unencoded in     HTTP request headers. If httpd was used in conjunction     with a proxy or backend server that interpreted those     characters differently, a remote attacker could     possibly use this flaw to inject data into HTTP     responses, resulting in proxy cache     poisoning.(CVE-2016-8743)

  - A NULL pointer dereference flaw was found in the way     the mod_cache httpd module handled Content-Type     headers. A malicious HTTP server could cause the httpd     child process to crash when the Apache HTTP server was     configured to proxy to a server with caching     enabled.(CVE-2014-3581)

  - Multiple flaws were found in the way httpd parsed HTTP     requests and responses using chunked transfer encoding.
    A remote attacker could use these flaws to create a     specially crafted request, which httpd would decode     differently from an HTTP proxy software in front of it,     possibly leading to HTTP request smuggling     attacks.(CVE-2015-3183)

  - In Apache httpd 2.0.23 to 2.0.65, 2.2.0 to 2.2.34, and     2.4.0 to 2.4.29, mod_authnz_ldap, if configured with     AuthLDAPCharsetConfig, uses the Accept-Language header     value to lookup the right charset encoding when     verifying the user's credentials. If the header value     is not present in the charset conversion table, a     fallback mechanism is used to truncate it to a two     characters value to allow a quick retry (for example,     'en-US' is truncated to 'en'). A header value of less     than two characters forces an out of bound write of one     NUL byte to a memory location that is not part of the     string. In the worst case, quite unlikely, the process     would crash which could be used as a Denial of Service     attack. In the more likely case, this memory is already     reserved for future use and the issue has no effect at     all.(CVE-2017-15710)

  - A NULL pointer dereference flaw was found in the     httpd's mod_ssl module. A remote attacker could use     this flaw to cause an httpd child process to crash if     another module used by httpd called a certain API     function during the processing of an HTTPS     request.(CVE-2017-3169)

  - It was discovered that httpd used the value of the     Proxy header from HTTP requests to initialize the     HTTP_PROXY environment variable for CGI scripts, which     in turn was incorrectly used by certain HTTP client     implementations to configure the proxy for outgoing     HTTP requests. A remote attacker could possibly use     this flaw to redirect HTTP requests performed by a CGI     script to an attacker-controlled proxy via a malicious     HTTP request.(CVE-2016-5387)

  - A buffer over-read flaw was found in the httpd's     mod_mime module. A user permitted to modify httpd's     MIME configuration could use this flaw to cause httpd     child process to crash.(CVE-2017-7679)

  - A specially crafted HTTP request header could have     crashed the Apache HTTP Server prior to version 2.4.30     due to an out of bound read while preparing data to be     cached in shared memory. It could be used as a Denial     of Service attack against users of mod_cache_socache.
    The vulnerability is considered as low risk since     mod_cache_socache is not widely used, mod_cache_disk is     not concerned by this vulnerability.(CVE-2018-1303)

  - It was discovered that the httpd's mod_auth_digest     module did not properly initialize memory before using     it when processing certain headers related to digest     authentication. A remote attacker could possibly use     this flaw to disclose potentially sensitive information     or cause httpd child process to crash by sending     specially crafted requests to a server.(CVE-2017-9788)

  - A flaw was found in the way httpd handled HTTP Trailer     headers when processing requests using chunked     encoding. A malicious client could use Trailer headers     to set additional HTTP headers after header processing     was performed by other modules. This could, for     example, lead to a bypass of header restrictions     defined with mod_headers.(CVE-2013-5704)

  - A buffer over-read flaw was found in the httpd's     ap_find_token() function. A remote attacker could use     this flaw to cause httpd child process to crash via a     specially crafted HTTP request.(CVE-2017-7668)

  - A race condition was found in mod_auth_digest when the     web server was running in a threaded MPM configuration.
    It could allow a user with valid credentials to     authenticate using another username, bypassing     configured access control restrictions.(CVE-2019-0217)

  - A NULL pointer dereference flaw was found in the     mod_cache httpd module. A malicious HTTP server could     cause the httpd child process to crash when the Apache     HTTP Server was used as a forward proxy with caching.
    (CVE-2013-4352)

  - he dav_xml_get_cdata function in main/util.c in the     mod_dav module in the Apache HTTP Server before 2.4.8     does not properly remove whitespace characters from     CDATA sections, which allows remote attackers to cause     a denial of service (daemon crash) via a crafted DAV     WRITE request. (CVE-2013-6438)

  - A denial of service flaw was found in the mod_proxy     httpd module. A remote attacker could send a specially     crafted request to a server configured as a reverse     proxy using a threaded Multi-Processing Modules (MPM)     that would cause the httpd child process to crash.
    (CVE-2014-0117)

  - A denial of service flaw was found in the way httpd's     mod_deflate module handled request body decompression     (configured via the 'DEFLATE' input filter). A remote     attacker able to send a request whose body would be     decompressed could use this flaw to consume an     excessive amount of system memory and CPU on the target     system.(CVE-2014-0118)

  - A denial of service flaw was found in the way httpd's     mod_cgid module executed CGI scripts that did not read     data from the standard input. A remote attacker could     submit a specially crafted request that would cause the     httpd child process to hang     indefinitely.(CVE-2014-0231)

  - It was discovered that in httpd 2.4, the internal API     function ap_some_auth_required() could incorrectly     indicate that a request was authenticated even when no     authentication was used. An httpd module using this API     function could consequently allow access that should     have been denied. (CVE-2015-3185)

  - It was discovered that the mod_session_crypto module of     httpd did not use any mechanisms to verify integrity of     the encrypted session data stored in the user's     browser. A remote attacker could use this flaw to     decrypt and modify session data using a padding oracle     attack. (CVE-2016-0736)

  - It was discovered that the mod_auth_digest module of     httpd did not properly check for memory allocation     failures. A remote attacker could use this flaw to     cause httpd child processes to repeatedly crash if the     server used HTTP digest authentication.(CVE-2016-2161)

  - It was discovered that the use of httpd's     ap_get_basic_auth_pw() API function outside of the     authentication phase could lead to authentication     bypass. A remote attacker could possibly use this flaw     to bypass required authentication if the API was used     incorrectly by one of the modules used by     httpd.(CVE-2017-3167)

  - A use-after-free flaw was found in the way httpd     handled invalid and previously unregistered HTTP     methods specified in the Limit directive used in an     .htaccess file. A remote attacker could possibly use     this flaw to disclose portions of the server memory, or     cause httpd child process to crash. (CVE-2017-9798)

  - In Apache httpd 2.2.0 to 2.4.29, when generating an     HTTP Digest authentication challenge, the nonce sent to     prevent reply attacks was not correctly generated using     a pseudo-random seed. In a cluster of servers using a     common Digest authentication configuration, HTTP     requests could be replayed across servers by an     attacker without detection. (CVE-2018-1312)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to its banner, the version of Apache 2.4.x installed on the remote host is prior to 2.4.16. It is, therefore, affected by the following vulnerabilities :

 - A flaw exists in the lua_websocket_read() function in the 'mod_lua' module due to incorrect handling of WebSocket PING frames. A remote attacker can exploit this, by sending a crafted WebSocket PING frame after a Lua script has called the wsupgrade() function, to crash a child process, resulting in a denial of service condition. (CVE-2015-0228)

 - A NULL pointer dereference flaw exists in the read_request_line() function due to a failure to initialize the protocol structure member. A remote attacker can exploit this flaw, on installations that enable the INCLUDES filter and has an ErrorDocument 400 directive specifying a local URI, by sending a request that lacks a method, to cause a denial of service condition. (CVE-2015-0253)

 - A flaw exists in the chunked transfer coding implementation due to a failure to properly parse chunk headers. A remote attacker can exploit this to conduct HTTP request smuggling attacks. (CVE-2015-3183)

 - A flaw exists in the ap_some_auth_required() function due to a failure to consider that a Require directive may be associated with an authorization setting rather than an authentication setting. A remote attacker can exploit this, if a module that relies on the 2.2 API behavior exists, to bypass intended access restrictions. (CVE-2015-3185)

 - A flaw exists in the RC4 algorithm due to an initial double-byte bias in the keystream generation. An attacker can exploit this, via Bayesian analysis that combines an a priori plaintext distribution with keystream distribution statistics, to conduct a plaintext recovery of the ciphertext. Note that RC4 cipher suites are prohibited per RFC 7465. This issue was fixed in Apache version 2.4.13; however, 2.4.13, 2.4.14, and 2.4.15 were never publicly released.

Note that the scanner has not tested for these issues but has instead relied only on the application's self-reported version number.

An update is now available for JBoss Core Services on Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Red Hat JBoss Core Services is a set of supplementary software for Red Hat JBoss middleware products. This software, such as Apache HTTP Server, is common to multiple JBoss middleware products, and is packaged under Red Hat JBoss Core Services to allow for faster distribution of updates, and for a more consistent update experience.

This release of Red Hat JBoss Core Services Apache HTTP Server 2.4.23 Service Pack 2 serves as an update for Red Hat JBoss Core Services Apache HTTP Server 2.4.23 Service Pack 1, and includes bug fixes, which are documented in the Release Notes document linked to in the References.

Security Fix(es) :

* It was discovered that the httpd's mod_auth_digest module did not properly initialize memory before using it when processing certain headers related to digest authentication. A remote attacker could possibly use this flaw to disclose potentially sensitive information or cause httpd child process to crash by sending specially crafted requests to a server. (CVE-2017-9788)

* It was discovered that in httpd 2.4, the internal API function ap_some_auth_required() could incorrectly indicate that a request was authenticated even when no authentication was used. An httpd module using this API function could consequently allow access that should have been denied. (CVE-2015-3185)

* A flaw was found in the way the DES/3DES cipher was used as part of the TLS /SSL protocol. A man-in-the-middle attacker could use this flaw to recover some plaintext data by capturing large amounts of encrypted traffic between TLS/SSL server and client if the communication used a DES/3DES based ciphersuite. (CVE-2016-2183)

Red Hat would like to thank OpenVPN for reporting CVE-2016-2183.
Upstream acknowledges Karthikeyan Bhargavan (Inria) and Gaetan Leurent (Inria) as the original reporters of CVE-2016-2183.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2017:2709 advisory.

    Red Hat JBoss Core Services is a set of supplementary software for Red Hat JBoss middleware products. This     software, such as Apache HTTP Server, is common to multiple JBoss middleware products, and is packaged     under Red Hat JBoss Core Services to allow for faster distribution of updates, and for a more consistent     update experience.

    This release of Red Hat JBoss Core Services Apache HTTP Server 2.4.23 Service Pack 2 serves as an update     for Red Hat JBoss Core Services Apache HTTP Server 2.4.23 Service Pack 1, and includes bug fixes, which     are documented in the Release Notes document linked to in the References.

    Security Fix(es):

    * It was discovered that the httpd's mod_auth_digest module did not properly initialize memory before     using it when processing certain headers related to digest authentication. A remote attacker could     possibly use this flaw to disclose potentially sensitive information or cause httpd child process to crash     by sending specially crafted requests to a server. (CVE-2017-9788)

    * It was discovered that in httpd 2.4, the internal API function ap_some_auth_required() could incorrectly     indicate that a request was authenticated even when no authentication was used. An httpd module using this     API function could consequently allow access that should have been denied. (CVE-2015-3185)

    * A flaw was found in the way the DES/3DES cipher was used as part of the TLS/SSL protocol. A man-in-the-     middle attacker could use this flaw to recover some plaintext data by capturing large amounts of encrypted     traffic between TLS/SSL server and client if the communication used a DES/3DES based ciphersuite.
    (CVE-2016-2183)

    Red Hat would like to thank OpenVPN for reporting CVE-2016-2183. Upstream acknowledges Karthikeyan     Bhargavan (Inria) and Gatan Leurent (Inria) as the original reporters of CVE-2016-2183.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Apache2 webserver was updated to fix several issues :

Security issues fixed :

  - The chunked transfer coding implementation in the Apache     HTTP Server did not properly parse chunk headers, which     allowed remote attackers to conduct HTTP request     smuggling attacks via a crafted request, related to     mishandling of large chunk-size values and invalid     chunk-extension characters in     modules/http/http_filters.c. [bsc#938728, CVE-2015-3183]

  - The LOGJAM security issue was addressed by: [bnc#931723     CVE-2015-4000]

  - changing the SSLCipherSuite cipherstring to disable     export cipher suites and deploy Ephemeral Elliptic-Curve     Diffie-Hellman (ECDHE) ciphers.

  - Adjust 'gensslcert' script to generate a strong and     unique Diffie Hellman Group and append it to the server     certificate file.

  - The ap_some_auth_required function in server/request.c     in the Apache HTTP Server 2.4.x did not consider that a     Require directive may be associated with an     authorization setting rather than an authentication     setting, which allowed remote attackers to bypass     intended access restrictions in opportunistic     circumstances by leveraging the presence of a module     that relies on the 2.2 API behavior. [bnc#938723     bnc#939516 CVE-2015-3185]

  - Tomcat mod_jk information leak due to incorrect     JkMount/JkUnmount directives processing [bnc#927845     CVE-2014-8111]

Other bugs fixed :

  - Now provides a suse_maintenance_mmn_# [bnc#915666].

  - Hard-coded modules in the %files [bnc#444878].

  - Fixed the IfModule directive around SSLSessionCache     [bnc#911159].

  - allow only TCP ports in Yast2 firewall files     [bnc#931002]

  - fixed a regression when some LDAP searches or     comparisons might be done with the wrong credentials     when a backend connection is reused [bnc#930228]

  - Fixed split-logfile2 script [bnc#869790]

  - remove the changed MODULE_MAGIC_NUMBER_MINOR from which     confuses modules the way that they expect functionality     that our apache does not provide [bnc#915666]

  - gensslcert: CN now defaults to `hostname -f`     [bnc#949766], fix help [bnc#949771]

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote host is running a version of Mac OS X 10.10.x that is prior to version 10.10.5. The installed version is affected by multiple vulnerabilities in the following components :

 - apache (CVE-2014-3581, CVE-2014-3583, CVE-2014-8109, CVE-2015-0228, CVE-2015-0253, CVE-2015-3183, CVE-2015-3185)
 - apache_mod_php (CVE-2015-2783, CVE-2015-2787, CVE-2015-3307, CVE-2015-3329, CVE-2015-3330, CVE-2015-4021, CVE-2015-4022, CVE-2015-4024, CVE-2015-4025, CVE-2015-4026, CVE-2015-4147, CVE-2015-4148)
 - Apple ID OD Plug-in (CVE-2015-3799)
 - AppleGraphicsControl (CVE-2015-5768)
 - Bluetooth (CVE-2015-3777, CVE-2015-3779, CVE-2015-3780, CVE-2015-3786, CVE-2015-3787)
 - bootp (CVE-2015-3778)
 - CloudKit (CVE-2015-3782)
 - CoreMedia Playback (CVE-2015-5777, CVE-2015-5778)
 - CoreText (CVE-2015-5761, CVE-2015-5755)
 - curl (CVE-2014-3613, CVE-2014-3620, CVE-2014-3707, CVE-2014-8150, CVE-2014-8151, CVE-2015-3143, CVE-2015-3144, CVE-2015-3145, CVE-2015-3148, CVE-2015-3153)
 - Data Detectors Engine (CVE-2015-5750)
 - Date & Time pref pane (CVE-2015-3757)
 - Dictionary Application (CVE-2015-3774)
 - DiskImages (CVE-2015-3800)
 - dyld (CVE-2015-3760)
 - FontParser (CVE-2015-3804, CVE-2015-5775, CVE-2015-5756)
 - groff (CVE-2009-5044, CVE-2009-5078)
 - ImageIO (CVE-2015-5758, CVE-2015-5781, CVE-2015-5782)
 - Install Framework Legacy (CVE-2015-5784, CVE-2015-5754)
 - IOFireWireFamily (CVE-2015-3769, CVE-2015-3771, CVE-2015-3772)
 - IOGraphics (CVE-2015-3770, CVE-2015-5783)
 - IOHIDFamily (CVE-2015-5774)
 - Kernel (CVE-2015-3766, CVE-2015-3768, CVE-2015-5747, CVE-2015-5748, CVE-2015-3806, CVE-2015-3803, CVE-2015-3802, CVE-2015-3805, CVE-2015-3776, CVE-2015-3761)
 - Libc (CVE-2015-3796, CVE-2015-3797, CVE-2015-3798)
 - Libinfo (CVE-2015-5776)
 - libpthread (CVE-2015-5757)
 - libxml2 (CVE-2014-0191, CVE-2014-3660, CVE-2015-3807)
 - libxpc (CVE-2015-3795)
 - mail_cmds (CVE-2014-7844)
 - Notification Center OSX (CVE-2015-3764)
 - ntfs (CVE-2015-5763)
 - OpenSSH (CVE-2015-5600)
 - OpenSSL (CVE-2015-1788, CVE-2015-1789, CVE-2015-1790, CVE-2015-1791, CVE-2015-1792)
 - perl (CVE-2013-7422)
 - PostgreSQL (CVE-2014-0067, CVE-2014-8161, CVE-2015-0241, CVE-2015-0242, CVE-2015-0243, CVE-2015-0244)
 - python (CVE-2013-7040, CVE-2013-7338, CVE-2014-1912, CVE-2014-7185, CVE-2014-9365)
 - QL Office (CVE-2015-5773, CVE-2015-3784)
 - Quartz Composer Framework (CVE-2015-5771)
 - Quick Look (CVE-2015-3781)
 - QuickTime 7 (CVE-2015-3779, CVE-2015-5753, CVE-2015-5779, CVE-2015-3765, CVE-2015-3788, CVE-2015-3789, CVE-2015-3790, CVE-2015-3791, CVE-2015-3792, CVE-2015-5751)
 - SceneKit (CVE-2015-5772, CVE-2015-3783)
 - Security (CVE-2015-3775)
 - SMBClient (CVE-2015-3773)
 - Speech UI (CVE-2015-3794)
 - sudo (CVE-2013-1775, CVE-2013-1776, CVE-2013-2776, CVE-2013-2777, CVE-2014-0106, CVE-2014-9680)
 - tcpdump (CVE-2014-8767, CVE-2014-8769, CVE-2014-9140)
 - Text Formats (CVE-2015-3762)
 - udf (CVE-2015-3767)

 Note that successful exploitation of the most serious issues can result in arbitrary code execution.

The version of Apache HTTP Server 2.4 installed on the remote host is prior to 2.4.13. It is, therefore, affected by the following vulnerabilities : 

 - A flaw exists in the lua_websocket_read() function in the 'mod_lua' module due to incorrect handling of WebSocket PING frames. A remote attacker can exploit this, by sending a crafted WebSocket PING frame after a Lua script has called the wsupgrade() function, to crash a child process, resulting in a denial of service condition. (CVE-2015-0228) 
 - A NULL pointer dereference flaw exists in the read_request_line() function due to a failure to initialize the protocol structure member. A remote  attacker can exploit this flaw, on installations that enable the INCLUDES filter and has an ErrorDocument 400 directive specifying a local URI, by sending a request that lacks a method, to cause a denial of service condition. (CVE-2015-0253) 
 - A flaw exists in the chunked transfer coding implementation due to a failure to properly parse chunk headers. A remote attacker can exploit this to conduct HTTP request smuggling attacks. (CVE-2015-3183) 
 - A security bypass flaw affects mod_authz_svn related to a failure to properly restrict anonymous access. This may allow anonymous access in scenarios where it is intended to be restricted to authenticated users. (CVE-2015-3184) 
 - A flaw exists in the ap_some_auth_required() function due to a failure to consider that a Require directive may be associated with an authorization setting rather than an authentication setting. A remote attacker can exploit this, if a module that relies on the 2.2 API behavior exists, to bypass intended access restrictions. (CVE-2015-3185) 
 - A flaw exists in the RC4 algorithm due to an initial double-byte bias in the keystream generation. An attacker can exploit this, via Bayesian analysis that combines a priori plaintext distribution with keystream distribution statistics, to conduct a plaintext recovery of the ciphertext. Note that RC4 cipher suites are now prohibited per RFC 7465. This issue was fixed in Apache version 2.4.13; however, 2.4.13, 2.4.14, and 2.4.15 were never publicly released. (CVE-2015-2808)

Apache2 was updated to fix security issues.

  - CVE-2015-3185: The ap_some_auth_required function in     server/request.c in the Apache HTTP Server 2.4.x did not     consider that a Require directive may be associated with     an authorization setting rather than an authentication     setting, which allows remote attackers to bypass     intended access restrictions in opportunistic     circumstances by leveraging the presence of a module     that relies on the 2.2 API behavior. [bnc#938723]

  - CVE-2015-3183: The chunked transfer coding     implementation in the Apache HTTP Server did not     properly parse chunk headers, which allows remote     attackers to conduct HTTP request smuggling attacks via     a crafted request, related to mishandling of large     chunk-size values and invalid chunk-extension characters     in modules/http/http_filters.c. [bnc#938728]

On openSUSE 13.1 :

  - CVE-2015-4000: Fix Logjam vulnerability: change the     default SSLCipherSuite cipherstring to disable export     cipher suites and deploy Ephemeral Elliptic-Curve     Diffie-Hellman (ECDHE) ciphers. Adjust 'gensslcert'     script to generate a strong and unique Diffie Hellman     Group and append it to the server certificate file     [bnc#931723].

The version of Apple Xcode installed on the remote Mac OS X host is prior to 7.0. It is, therefore, affected by the multiple vulnerabilities :

  - A memory leak issue exists in file d1_srtp.c related to     the DTLS SRTP extension handling and specially crafted     handshake messages. An attacker can exploit this to     cause denial of service condition. (CVE-2014-3513)

  - A man-in-the-middle (MitM) information disclosure     vulnerability, known as POODLE, exists due to the way     SSL 3.0 handles padding bytes when decrypting messages     encrypted using block ciphers in cipher block chaining     (CBC) mode. A MitM attacker can decrypt a selected byte     of a cipher text in as few as 256 tries if they are able     to force a victim application to repeatedly send the     same data over newly created SSL 3.0 connections.
    (CVE-2014-3566)

  - A memory leak issue exists in file t1_lib.c related to     session ticket handling. An attacker can exploit this to     cause denial of service condition. (CVE-2014-3567)

  - An error exists related to the build configuration     process and the 'no-ssl3' build option that allows     servers and clients to process insecure SSL 3.0     handshake messages. (CVE-2014-3568)

  - A directory traversal vulnerability exists in send.js     due to improper sanitization of user-supplied input.
    A remote, unauthenticated attacker can exploit this, via     a specially crafted request, to access arbitrary files     outside of the restricted path. (CVE-2014-6394)

  - A denial of service vulnerability exists in the     mod_dav_svn and svnserve servers of Apache Subversion. A     remote, unauthenticated attacker can exploit this, via a     crafted combination of parameters, to cause the current     process to abort through a failed assertion.
    (CVE-2015-0248)

  - A flaw exists in the mod_dav_svn server of Apache     Subversion. A remote, authenticated attacker can exploit     this, via a crafted HTTP request sequence, to spoof an     'svn:author' property value. (CVE-2015-0251)

  - A flaw exists in the Apache HTTP Server due to the     ap_some_auth_required() function in file request.c not     properly handling Require directive associations. A     remote, unauthenticated attacker can exploit this to     bypass access restrictions, by leveraging a module that     relies on the 2.2 API behavior. (CVE-2015-3185)

  - A flaw exists in the IDE Xcode server due to improper     restriction of access to the repository email lists. A     remote, unauthenticated attacker can exploit this to     access sensitive build information, by leveraging     incorrect notification delivery. (CVE-2015-5909)

  - A flaw exists in the IDE Xcode server due to the     transmission of server information in cleartext. A     remote, man-in-the-middle attacker can exploit this to     access sensitive information. (CVE-2015-5910)

The remote Mac OS X host has a version of OS X Server installed that is prior to 5.0.3. It is, therefore, affected by the following vulnerabilities :

  - A flaw exists in the mod_headers module that allows HTTP     trailers to replace HTTP headers late during request     processing. A remote attacker can exploit this to inject     arbitrary headers. This can also cause some modules to     function incorrectly or appear to function incorrectly.
    (CVE-2013-5704)

  - A privilege escalation vulnerability exists due to the     'make check' command not properly invoking initdb to     specify authentication requirements for a database     cluster to be used for tests. A local attacker can     exploit this issue to gain temporary server access and     elevated privileges. (CVE-2014-0067)

  - A NULL pointer dereference flaw exists in module     mod_cache. A remote attacker, using an empty HTTP     Content-Type header, can exploit this vulnerability to     crash a caching forward proxy configuration, resulting     in a denial of service if using a threaded MPM.
    (CVE-2014-3581)

  - A out-of-bounds memory read flaw exists in module     mod_proxy_fcgi. An attacker, using a remote FastCGI     server to send long response headers, can exploit this     vulnerability to cause a denial of service by causing     a buffer over-read. (CVE-2014-3583)

  - A flaw exists in module mod_lua when handling a     LuaAuthzProvider used in multiple Require directives     with different arguments. An attacker can exploit this     vulnerability to bypass intended access restrictions.
    (CVE-2014-8109)

  - An information disclosure vulnerability exists due to     improper handling of restricted column values in     constraint-violation error messages. An authenticated,     remote attacker can exploit this to gain access to     sensitive information. (CVE-2014-8161)

  - A flaw exists within the Domain Name Service due to an     error in the code used to follow delegations. A remote     attacker, with a maliciously-constructed zone or query,     can cause the service to issue unlimited queries,     resulting in resource exhaustion. (CVE-2014-8500)

  - A flaw exists in the lua_websocket_read() function in     the 'mod_lua' module due to incorrect handling of     WebSocket PING frames. A remote attacker can exploit     this, by sending a crafted WebSocket PING frame after a     Lua script has called the wsupgrade() function, to crash     a child process, resulting in a denial of service     condition. (CVE-2015-0228)

  - Multiple vulnerabilities exist due to several buffer     overflow errors related to the 'to_char' functions. An     authenticated, remote attacker can exploit these issues     to cause a denial of service or arbitrary code     execution. (CVE-2015-0241)

  - Multiple vulnerabilities exist due to several     stack-based buffer overflow errors in various *printf()     functions. The overflows are due to improper validation     of user-supplied input when formatting a floating point     number where the requested precision is greater than     approximately 500. An authenticated, remote attacker     can exploit these issues to cause a denial of service or     arbitrary code execution. (CVE-2015-0242)

  - Multiple vulnerabilities exist due to an overflow     condition in multiple functions in the 'pgcrypto'     extension. The overflows are due to improper validation     of user-supplied input when tracking memory sizes. An     authenticated, remote attacker can exploit these issues     to cause a denial of service or arbitrary code     execution. (CVE-2015-0243)

  - A SQL injection vulnerability exists due to improper     sanitization of user-supplied input when handling     crafted binary data within a command parameter. An     authenticated, remote attacker can exploit this issue     to inject or manipulate SQL queries, allowing the     manipulation or disclosure of arbitrary data.
    (CVE-2015-0244)

  - A NULL pointer dereference flaw exists in the     read_request_line() function due to a failure to     initialize the protocol structure member. A remote     attacker can exploit this flaw, on installations that     enable the INCLUDES filter and has an ErrorDocument 400     directive specifying a local URI, by sending a request     that lacks a method, to cause a denial of service     condition. (CVE-2015-0253)

  - A denial of service vulnerability exists due to an error     relating to DNSSEC validation and the managed-keys     feature. A remote attacker can trigger an incorrect     trust-anchor management scenario in which no key is     ready for use, resulting in an assertion failure and     daemon crash. (CVE-2015-1349)

  - A flaw exists in PostgreSQL client disconnect timeout     expiration that is triggered when a timeout interrupt     is fired partway through the session shutdown sequence.     (CVE-2015-3165)

  - A flaw exists in the printf() functions due to a failure     to check for errors. A remote attacker can use this to     gain access to sensitive information. (CVE-2015-3166)

  - The pgcrypto component in PostgreSQL has multiple error     messages for decryption with an incorrect key. A remote     attacker can use this to recover keys from other     systems. (CVE-2015-3167)

  - A flaw exists in the chunked transfer coding     implementation due to a failure to properly parse chunk     headers. A remote attacker can exploit this to conduct     HTTP request smuggling attacks. (CVE-2015-3183)

  - A flaw exists in the ap_some_auth_required() function     due to a failure to consider that a Require directive     may be associated with an authorization setting rather     than an authentication setting. A remote attacker can     exploit this, if a module that relies on the 2.2 API     behavior exists, to bypass intended access restrictions.
    (CVE-2015-3185)

  - Multiple unspecified XML flaws exist in the Wiki Server     based on Twisted. (CVE-2015-5911)

Updated httpd packages that fix two security issues are now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.

Multiple flaws were found in the way httpd parsed HTTP requests and responses using chunked transfer encoding. A remote attacker could use these flaws to create a specially crafted request, which httpd would decode differently from an HTTP proxy software in front of it, possibly leading to HTTP request smuggling attacks. (CVE-2015-3183)

It was discovered that in httpd 2.4, the internal API function ap_some_auth_required() could incorrectly indicate that a request was authenticated even when no authentication was used. An httpd module using this API function could consequently allow access that should have been denied. (CVE-2015-3185)

All httpd users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. After installing the updated packages, the httpd service will be restarted automatically.

The Tenable SecurityCenter application installed on the remote host contains a bundled version of Apache HTTP Server prior to 2.4.16. It is, therefore, affected by the following vulnerabilities :

  - A flaw exists in the chunked transfer coding     implementation in http_filters.c. due to a failure to     properly parse chunk headers when handling large     chunk-size values and invalid chunk-extension     characters. A remote attacker can exploit this, via a     crafted request, to carry out HTTP request smuggling,     potentially resulting in cache poisoning or the     hijacking of credentials. (CVE-2015-3183)

  - A security bypass vulnerability exists due to a failure     in the ap_some_auth_required() function in request.c to     consider that a Require directive may be associated with     an authorization setting instead of an authentication     setting. A remote attacker can exploit this, by     leveraging the presence of a module that relies on the     2.2 API behavior, to bypass intended access restrictions     under certain circumstances.
    (CVE-2015-3185)

Note that the 4.x version of SecurityCenter is impacted only by CVE-2015-3183. The 5.x version is impacted by both CVE-2015-3183 and CVE-2015-3185

Multiple flaws were found in the way httpd parsed HTTP requests and responses using chunked transfer encoding. A remote attacker could use these flaws to create a specially crafted request, which httpd would decode differently from an HTTP proxy software in front of it, possibly leading to HTTP request smuggling attacks. (CVE-2015-3183)

It was discovered that in httpd 2.4, the internal API function ap_some_auth_required() could incorrectly indicate that a request was authenticated even when no authentication was used. An httpd module using this API function could consequently allow access that should have been denied. (CVE-2015-3185)

After installing the updated packages, the httpd service will be restarted automatically.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2015-1667 advisory.

    - core: fix chunk header parsing defect (CVE-2015-3183)

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

It was discovered that in httpd 2.4, the internal API function ap_some_auth_required() could incorrectly indicate that a request was authenticated even when no authentication was used. An httpd module using this API function could consequently allow access that should have been denied. (CVE-2015-3185)

Multiple flaws were found in the way httpd parsed HTTP requests and responses using chunked transfer encoding. A remote attacker could use these flaws to create a specially crafted request, which httpd would decode differently from an HTTP proxy software in front of it, possibly leading to HTTP request smuggling attacks. (CVE-2015-3183)

A NULL pointer dereference flaw was found in the way httpd generated certain error responses. A remote attacker could possibly use this flaw crash the httpd child process using a request that triggers a certain HTTP error. (CVE-2015-0253)

A denial of service flaw was found in the way the mod_lua httpd module processed certain WebSocket Ping requests. A remote attacker could send a specially crafted WebSocket Ping packet that would cause the httpd child process to crash. (CVE-2015-0228)

The remote host is running a version of Mac OS X 10.8.5 or 10.9.5 that is missing Security Update 2015-006. It is, therefore, affected by multiple vulnerabilities in the following components :

  - apache
  - apache_mod_php
  - CoreText
  - FontParser
  - Libinfo
  - libxml2
  - OpenSSL
  - perl
  - PostgreSQL
  - QL Office
  - Quartz Composer Framework
  - QuickTime 7
  - SceneKit

Note that successful exploitation of the most serious issues can result in arbitrary code execution.

The remote host is running a version of Mac OS X 10.10.x that is prior to 10.10.5. It is, therefore, affected by multiple vulnerabilities in the following components :

  - apache
  - apache_mod_php
  - Apple ID OD Plug-in
  - AppleGraphicsControl
  - Bluetooth
  - bootp
  - CloudKit
  - CoreMedia Playback
  - CoreText
  - curl
  - Data Detectors Engine
  - Date & Time pref pane
  - Dictionary Application
  - DiskImages
  - dyld
  - FontParser
  - groff
  - ImageIO
  - Install Framework Legacy
  - IOFireWireFamily
  - IOGraphics
  - IOHIDFamily
  - Kernel
  - Libc
  - Libinfo
  - libpthread
  - libxml2
  - libxpc
  - mail_cmds
  - Notification Center OSX
  - ntfs
  - OpenSSH
  - OpenSSL
  - perl
  - PostgreSQL
  - python
  - QL Office
  - Quartz Composer Framework
  - Quick Look
  - QuickTime 7
  - SceneKit
  - Security
  - SMBClient
  - Speech UI
  - sudo
  - tcpdump
  - Text Formats
  - udf 

Note that successful exploitation of the most serious issues can result in arbitrary code execution.

Several vulnerabilities have been found in the Apache HTTPD server.

  - CVE-2015-3183     An HTTP request smuggling attack was possible due to a     bug in parsing of chunked requests. A malicious client     could force the server to misinterpret the request     length, allowing cache poisoning or credential hijacking     if an intermediary proxy is in use.

  - CVE-2015-3185     A design error in the 'ap_some_auth_required' function     renders the API unusuable in apache2 2.4.x. This could     lead to modules using this API to allow access when they     should otherwise not do so. The fix backports the new     'ap_some_authn_required' API from 2.4.16. This issue     does not affect the oldstable distribution (wheezy).

In addition, the updated package for the oldstable distribution (wheezy) removes a limitation of the Diffie-Hellman (DH) parameters to 1024 bits. This limitation may potentially allow an attacker with very large computing resources, like a nation-state, to break DH key exchange by precomputation. The updated apache2 package also allows to configure custom DH parameters. More information is contained in the changelog.Debian.gz file. These improvements were already present in the stable, testing, and unstable distributions.

Update to new version 2.4.16. This update fixed various bugs as well as few security issues.

For full changelog, see http://www.apache.org/dist/httpd/CHANGES_2.4.16

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Ubuntu 14.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-2686-1 advisory.

    It was discovered that the Apache HTTP Server incorrectly parsed chunk headers. A remote attacker could     possibly use this issue to perform HTTP request smuggling attacks. (CVE-2015-3183)

    It was discovered that the Apache HTTP Server incorrectly handled the ap_some_auth_required API. A remote     attacker could possibly use this issue to bypass intended access restrictions. This issue only affected     Ubuntu 14.04 LTS and Ubuntu 15.04. (CVE-2015-3185)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to its banner, the version of Apache 2.4.x installed on the remote host is prior to 2.4.16. It is, therefore, affected by the following vulnerabilities :

  - A flaw exists in the lua_websocket_read() function in     the 'mod_lua' module due to incorrect handling of     WebSocket PING frames. A remote attacker can exploit     this, by sending a crafted WebSocket PING frame after a     Lua script has called the wsupgrade() function, to crash     a child process, resulting in a denial of service     condition. (CVE-2015-0228)

  - A NULL pointer dereference flaw exists in the     read_request_line() function due to a failure to     initialize the protocol structure member. A remote     attacker can exploit this flaw, on installations that     enable the INCLUDES filter and has an ErrorDocument 400     directive specifying a local URI, by sending a request     that lacks a method, to cause a denial of service     condition. (CVE-2015-0253)

  - A flaw exists in the chunked transfer coding     implementation due to a failure to properly parse chunk     headers. A remote attacker can exploit this to conduct     HTTP request smuggling attacks. (CVE-2015-3183)

  - A flaw exists in the ap_some_auth_required() function     due to a failure to consider that a Require directive     may be associated with an authorization setting rather     than an authentication setting. A remote attacker can     exploit this, if a module that relies on the 2.2 API     behavior exists, to bypass intended access restrictions.
    (CVE-2015-3185)

  - A flaw exists in the RC4 algorithm due to an initial     double-byte bias in the keystream generation. An     attacker can exploit this, via Bayesian analysis that     combines an a priori plaintext distribution with     keystream distribution statistics, to conduct a     plaintext recovery of the ciphertext. Note that RC4     cipher suites are prohibited per RFC 7465. This issue     was fixed in Apache version 2.4.13; however, 2.4.13,     2.4.14, and 2.4.15 were never publicly released.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

New httpd packages are available for Slackware 14.0, 14.1, and
-current to fix security issues.

Jim Jagielski reports :

CVE-2015-3183 (cve.mitre.org) core: Fix chunk header parsing defect.
Remove apr_brigade_flatten(), buffering and duplicated code from the HTTP_IN filter, parse chunks in a single pass with zero copy. Limit accepted chunk-size to 2^63-1 and be strict about chunk-ext authorized characters.

CVE-2015-3185 (cve.mitre.org) Replacement of ap_some_auth_required (unusable in Apache httpd 2.4) with new ap_some_authn_required and ap_force_authn hook.

CVE-2015-0253 (cve.mitre.org) core: Fix a crash with ErrorDocument 400 pointing to a local URL-path with the INCLUDES filter active, introduced in 2.4.11. PR 57531.

CVE-2015-0228 (cve.mitre.org) mod_lua: A maliciously crafted websockets PING after a script calls r:wsupgrade() can cause a child process crash.

ID	Name	Product	Family	Severity
181102	Oracle Linux 7 : httpd24-httpd (ELSA-2015-1666)	Nessus	Oracle Linux Local Security Checks	high
124922	EulerOS Virtualization 3.0.1.0 : httpd (EulerOS-SA-2019-1419)	Nessus	Huawei Local Security Checks	critical
98908	Apache 2.4.x < 2.4.16 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	high
103241	RHEL 6 : JBoss Core Services (RHSA-2017:2710)	Nessus	Red Hat Local Security Checks	critical
103240	RHEL 7 : Red Hat JBoss Core Services (RHSA-2017:2709)	Nessus	Red Hat Local Security Checks	critical
86703	SUSE SLES12 Security Update : apache2 (SUSE-SU-2015:1851-1) (Logjam)	Nessus	SuSE Local Security Checks	low
8981	Mac OS X < 10.10.5 Multiple Vulnerabilities	Nessus Network Monitor	Operating System Detection	high
8970	Apache HTTP Server 2.4.x < 2.4.16 Multiple Vulnerabilities	Nessus Network Monitor	Web Servers	medium
86285	openSUSE Security Update : apache2 (openSUSE-2015-635) (Logjam)	Nessus	SuSE Local Security Checks	low
86245	Apple Xcode < 7.0 (Mac OS X) (POODLE)	Nessus	MacOS X Local Security Checks	high
86066	Mac OS X : OS X Server < 5.0.3 Multiple Vulnerabilities	Nessus	MacOS X Local Security Checks	critical
85636	CentOS 7 : httpd (CESA-2015:1667)	Nessus	CentOS Local Security Checks	medium
85628	Tenable SecurityCenter Multiple Apache Vulnerabilities (TNS-2015-11)	Nessus	Web Servers	medium
85621	Scientific Linux Security Update : httpd on SL7.x x86_64 (20150824)	Nessus	Scientific Linux Local Security Checks	medium
85617	RHEL 7 : httpd (RHSA-2015:1667)	Nessus	Red Hat Local Security Checks	medium
85613	Oracle Linux 7 : httpd (ELSA-2015-1667)	Nessus	Oracle Linux Local Security Checks	high
85452	Amazon Linux AMI : httpd24 (ALAS-2015-579)	Nessus	Amazon Linux Local Security Checks	medium
85409	Mac OS X Multiple Vulnerabilities (Security Update 2015-006)	Nessus	MacOS X Local Security Checks	high
85408	Mac OS X 10.10.x < 10.10.5 Multiple Vulnerabilities	Nessus	MacOS X Local Security Checks	high
85164	Debian DSA-3325-1 : apache2 - security update	Nessus	Debian Local Security Checks	medium
85092	Fedora 21 : httpd-2.4.16-1.fc21 (2015-11792)	Nessus	Fedora Local Security Checks	medium
85042	Ubuntu 14.04 LTS : Apache HTTP Server vulnerabilities (USN-2686-1)	Nessus	Ubuntu Local Security Checks	high
84959	Apache 2.4.x < 2.4.16 Multiple Vulnerabilities	Nessus	Web Servers	medium
84906	Fedora 22 : httpd-2.4.16-1.fc22 (2015-11689)	Nessus	Fedora Local Security Checks	medium
84829	Slackware 14.0 / 14.1 / current : httpd (SSA:2015-198-01)	Nessus	Slackware Local Security Checks	medium
84781	FreeBSD : apache24 -- multiple vulnerabilities (a12494c1-2af4-11e5-86ff-14dae9d210b8)	Nessus	FreeBSD Local Security Checks	medium

Detections

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CVE-2015-3185

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Tenable Plugins

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