Multiple vulnerabilities were discovered in OpenSSL, a Secure Sockets Layer toolkit.

  - CVE-2014-8176     Praveen Kariyanahalli, Ivan Fratric and Felix Groebert     discovered that an invalid memory free could be     triggered when buffering DTLS data. This could allow     remote attackers to cause a denial of service (crash) or     potentially execute arbitrary code. This issue only     affected the oldstable distribution (wheezy).

  - CVE-2015-1788     Joseph Barr-Pixton discovered that an infinite loop     could be triggered due to incorrect handling of     malformed ECParameters structures. This could allow     remote attackers to cause a denial of service.

  - CVE-2015-1789     Robert Swiecki and Hanno Bock discovered that the     X509_cmp_time function could read a few bytes out of     bounds. This could allow remote attackers to cause a     denial of service (crash) via crafted certificates and     CRLs.

  - CVE-2015-1790     Michal Zalewski discovered that the PKCS#7 parsing code     did not properly handle missing content which could lead     to a NULL pointer dereference. This could allow remote     attackers to cause a denial of service (crash) via     crafted ASN.1-encoded PKCS#7 blobs.

  - CVE-2015-1791     Emilia Kasper discovered that a race condition could     occur due to incorrect handling of NewSessionTicket in a     multi-threaded client, leading to a double free. This     could allow remote attackers to cause a denial of     service (crash).

  - CVE-2015-1792     Johannes Bauer discovered that the CMS code could enter     an infinite loop when verifying a signedData message, if     presented with an unknown hash function OID. This could     allow remote attackers to cause a denial of service.

Additionally OpenSSL will now reject handshakes using DH parameters shorter than 768 bits as a countermeasure against the Logjam attack (CVE-2015-4000 ).

The remote OracleVM system is missing necessary patches to address critical security updates :

  - improved fix for (CVE-2015-1791)

  - add missing parts of CVE-2015-0209 fix for corectness     although unexploitable

  - fix CVE-2014-8176 - invalid free in DTLS buffering code

  - fix CVE-2015-1789 - out-of-bounds read in X509_cmp_time

  - fix CVE-2015-1790 - PKCS7 crash with missing     EncryptedContent

  - fix CVE-2015-1791 - race condition handling     NewSessionTicket

  - fix CVE-2015-1792 - CMS verify infinite loop with     unknown hash function

  - fix CVE-2015-3216 - regression in RAND locking that can     cause segfaults on read in multithreaded applications

Updated openssl packages that fix multiple security issues are now available for Red Hat Enterprise Linux 6 and 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.

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols, as well as a full-strength, general purpose cryptography library.

An invalid free flaw was found in the way OpenSSL handled certain DTLS handshake messages. A malicious DTLS client or server could cause a DTLS server or client using OpenSSL to crash or, potentially, execute arbitrary code. (CVE-2014-8176)

A flaw was found in the way the OpenSSL packages shipped with Red Hat Enterprise Linux 6 and 7 performed locking in the ssleay_rand_bytes() function. This issue could possibly cause a multi-threaded application using OpenSSL to perform an out-of-bounds read and crash.
(CVE-2015-3216)

An out-of-bounds read flaw was found in the X509_cmp_time() function of OpenSSL. A specially crafted X.509 certificate or a Certificate Revocation List (CRL) could possibly cause a TLS/SSL server or client using OpenSSL to crash. (CVE-2015-1789)

A race condition was found in the session handling code of OpenSSL.
This issue could possibly cause a multi-threaded TLS/SSL client using OpenSSL to double free session ticket data and crash. (CVE-2015-1791)

A flaw was found in the way OpenSSL handled Cryptographic Message Syntax (CMS) messages. A CMS message with an unknown hash function identifier could cause an application using OpenSSL to enter an infinite loop. (CVE-2015-1792)

A NULL pointer dereference was found in the way OpenSSL handled certain PKCS#7 inputs. A specially crafted PKCS#7 input with missing EncryptedContent data could cause an application using OpenSSL to crash. (CVE-2015-1790)

Red Hat would like to thank the OpenSSL project for reporting CVE-2014-8176, CVE-2015-1789, CVE-2015-1790, CVE-2015-1791 and CVE-2015-1792 flaws. Upstream acknowledges Praveen Kariyanahalli and Ivan Fratric as the original reporters of CVE-2014-8176, Robert Swiecki and Hanno Bock as the original reporters of CVE-2015-1789, Michal Zalewski as the original reporter of CVE-2015-1790, Emilia Kasper as the original report of CVE-2015-1791 and Johannes Bauer as the original reporter of CVE-2015-1792.

All openssl users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. For the update to take effect, all services linked to the OpenSSL library must be restarted, or the system rebooted.

The remote Redhat Enterprise Linux 5 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - openssl: doapr_outch function does not verify that certain memory allocation succeeds (CVE-2016-2842)

  - Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2006-7250, CVE-2012-1410. Reason: this     candidate was intended for one issue, but CVE users may have associated it with multiple unrelated issues.
    Notes: All CVE users should consult CVE-2006-7250 for the OpenSSL candidate or CVE-2012-1410 for the Kadu     candidate. All references and descriptions in this candidate have been removed to prevent accidental usage     (CVE-2006-7248)

  - The mime_hdr_cmp function in crypto/asn1/asn_mime.c in OpenSSL 0.9.8t and earlier allows remote attackers     to cause a denial of service (NULL pointer dereference and application crash) via a crafted S/MIME     message. (CVE-2006-7250)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

The remote Redhat Enterprise Linux 4 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - openssl: Memory corruption in the ASN.1 encoder (CVE-2016-2108)

  - Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2006-7250, CVE-2012-1410. Reason: this     candidate was intended for one issue, but CVE users may have associated it with multiple unrelated issues.
    Notes: All CVE users should consult CVE-2006-7250 for the OpenSSL candidate or CVE-2012-1410 for the Kadu     candidate. All references and descriptions in this candidate have been removed to prevent accidental usage     (CVE-2006-7248)

  - The mime_hdr_cmp function in crypto/asn1/asn_mime.c in OpenSSL 0.9.8t and earlier allows remote attackers     to cause a denial of service (NULL pointer dereference and application crash) via a crafted S/MIME     message. (CVE-2006-7250)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

This update for libopenssl0_9_8 fixes the following issues :

  - CVE-2016-0800 aka the 'DROWN' attack (bsc#968046):
    OpenSSL was vulnerable to a cross-protocol attack that     could lead to decryption of TLS sessions by using a     server supporting SSLv2 and EXPORT cipher suites as a     Bleichenbacher RSA padding oracle.

    This update changes the openssl library to :

  - Disable SSLv2 protocol support by default.

    This can be overridden by setting the environment     variable 'OPENSSL_ALLOW_SSL2' or by using     SSL_CTX_clear_options using the SSL_OP_NO_SSLv2 flag.

    Note that various services and clients had already     disabled SSL protocol 2 by default previously.

  - Disable all weak EXPORT ciphers by default. These can be     reenabled if required by old legacy software using the     environment variable 'OPENSSL_ALLOW_EXPORT'.

  - CVE-2016-0797 (bnc#968048): The BN_hex2bn() and     BN_dec2bn() functions had a bug that could result in an     attempt to de-reference a NULL pointer leading to     crashes. This could have security consequences if these     functions were ever called by user applications with     large untrusted hex/decimal data. Also, internal usage     of these functions in OpenSSL uses data from config     files or application command line arguments. If user     developed applications generated config file data based     on untrusted data, then this could have had security     consequences as well.

  - CVE-2016-0799 (bnc#968374) On many 64 bit systems, the     internal fmtstr() and doapr_outch() functions could     miscalculate the length of a string and attempt to     access out-of-bounds memory locations. These problems     could have enabled attacks where large amounts of     untrusted data is passed to the BIO_*printf functions.
    If applications use these functions in this way then     they could have been vulnerable. OpenSSL itself uses     these functions when printing out human-readable dumps     of ASN.1 data. Therefore applications that print this     data could have been vulnerable if the data is from     untrusted sources. OpenSSL command line applications     could also have been vulnerable when they print out     ASN.1 data, or if untrusted data is passed as command     line arguments. Libssl is not considered directly     vulnerable.

  - The package was updated to 0.9.8zh :

  - fixes many security vulnerabilities (not separately     listed): CVE-2015-3195, CVE-2015-1788, CVE-2015-1789,     CVE-2015-1790, CVE-2015-1792, CVE-2015-1791,     CVE-2015-0286, CVE-2015-0287, CVE-2015-0289,     CVE-2015-0293, CVE-2015-0209, CVE-2015-0288,     CVE-2014-3571, CVE-2014-3569, CVE-2014-3572,     CVE-2015-0204, CVE-2014-8275, CVE-2014-3570,     CVE-2014-3567, CVE-2014-3568, CVE-2014-3566,     CVE-2014-3510, CVE-2014-3507, CVE-2014-3506,     CVE-2014-3505, CVE-2014-3508, CVE-2014-0224,     CVE-2014-0221, CVE-2014-0195, CVE-2014-3470,     CVE-2014-0076, CVE-2013-0169, CVE-2013-0166

  - avoid running OPENSSL_config twice. This avoids breaking     engine loading. (boo#952871, boo#967787)

  - fix CVE-2015-3197 (boo#963415)

  - SSLv2 doesn't block disabled ciphers

Versions of OpenSSL prior to 1.0.1n, or 1.0.2b are unpatched for the following vulnerabilities :

  - A man-in-the-middle vulnerability, known as Logjam, exists due to a flaw in the SSL/TLS protocol. A remote attacker can exploit this flaw to downgrade connections using ephemeral Diffie-Hellman key exchange to 512-bit export-grade cryptography. (CVE-2015-4000)

  - A denial of service vulnerability exists when processing an ECParameters structure due to an infinite loop that occurs when a specified curve is over a malformed binary polynomial field. A remote attacker can exploit this to perform a denial of service against any system that processes public keys, certificate requests, or certificates. This includes TLS clients and TLS servers with client authentication enabled. (CVE-2015-1788)

  - A denial of service vulnerability exists due to improper validation of the content and length of the ASN1_TIME string by the X509_cmp_time() function. A remote attacker can exploit this, via a malformed certificate and CRLs of various sizes, to cause a segmentation fault, resulting in a denial of service condition. TLS clients that verify CRLs are affected. TLS clients and servers with client authentication enabled may be affected if they use custom verification callbacks. (CVE-2015-1789)

  - A NULL pointer dereference flaw exists in the PKCS#7 parsing code due to incorrect handling of missing inner 'EncryptedContent'. This allows a remote attacker, via specially crafted ASN.1-encoded PKCS#7 blobs with missing content, to cause a denial of service condition or other potential unspecified impacts. (CVE-2015-1790)

  - A double-free error exists due to a race condition that occurs when a NewSessionTicket is received by a multi-threaded client when attempting to reuse a previous ticket. (CVE-2015-1791)

  - A denial of service vulnerability exists in the CMS code due to an infinite loop that occurs when verifying a signedData message. A remote attacker can exploit this to cause a denial of service condition. (CVE-2015-1792)

  - An off-by-one overflow condition affects the BN_rand() function in 'crypto/bn/random.c'. The issue is triggered as user-supplied input is not properly validated. This may allow an attacker to cause a buffer overflow, resulting in a denial of service.

  - An off-by-one overflow condition affects the BN_bn2hex() function in 'crypto/bn/bn_print.c'. The issue is triggered as user-supplied input is not properly validated. This may allow an attacker to cause a buffer overflow, potentially resulting in a denial of service or another, more severe impact.

Versions of OpenSSL prior to 0.9.8zg, or 1.0.0 prior to 1.0.0s are unpatched for the following vulnerabilities :

  - A denial of service vulnerability exists when processing an ECParameters structure due to an infinite loop that occurs when a specified curve is over a malformed binary polynomial field. A remote attacker can exploit this to perform a denial of service against any system that processes public keys, certificate requests, or certificates. This includes TLS clients and TLS servers with client authentication enabled. (CVE-2015-1788)

  - A denial of service vulnerability exists due to improper validation of the content and length of the ASN1_TIME string by the X509_cmp_time() function. A remote attacker can exploit this, via a malformed certificate and CRLs of various sizes, to cause a segmentation fault, resulting in a denial of service condition. TLS clients that verify CRLs are affected. TLS clients and servers with client authentication enabled may be affected if they use custom verification callbacks. (CVE-2015-1789)

  - A NULL pointer dereference flaw exists in the PKCS#7 parsing code due to incorrect handling of missing inner 'EncryptedContent'. This allows a remote attacker, via specially crafted ASN.1-encoded PKCS#7 blobs with missing content, to cause a denial of service condition or other potential unspecified impacts. (CVE-2015-1790)

  - A double-free error exists due to a race condition that occurs when a NewSessionTicket is received by a multi-threaded client when attempting to reuse a previous ticket. (CVE-2015-1791)

  - A denial of service vulnerability exists in the CMS code due to an infinite loop that occurs when verifying a signedData message. A remote attacker can exploit this to cause a denial of service condition. (CVE-2015-1792)

  - An off-by-one overflow condition affects the BN_rand() function in 'crypto/bn/random.c'. The issue is triggered as user-supplied input is not properly validated. This may allow an attacker to cause a buffer overflow, resulting in a denial of service.

  - An off-by-one overflow condition affects the BN_bn2hex() function in 'crypto/bn/bn_print.c'. The issue is triggered as user-supplied input is not properly validated. This may allow an attacker to cause a buffer overflow, potentially resulting in a denial of service or another, more severe impact.

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.

ID	Name	Product	Family	Published	Updated	Severity
84170	Debian DSA-3287-1 : openssl - security update (Logjam)	Nessus	Debian Local Security Checks	6/15/2015	12/5/2022	high
84203	OracleVM 3.3 : openssl (OVMSA-2015-0070)	Nessus	OracleVM Local Security Checks	6/16/2015	1/4/2021	high
84204	RHEL 6 / 7 : openssl (RHSA-2015:1115)	Nessus	Red Hat Local Security Checks	6/16/2015	2/5/2021	high
199355	RHEL 5 : openssl (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	6/3/2024	6/4/2024	critical
199380	RHEL 4 : openssl (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	6/3/2024	6/3/2024	critical
89651	openSUSE Security Update : libopenssl0_9_8 (openSUSE-2016-294) (DROWN) (FREAK) (POODLE)	Nessus	SuSE Local Security Checks	3/4/2016	12/5/2022	critical
8790	OpenSSL 1.0.1 < 1.0.1n / 1.0.2 < 1.0.2b Multiple Vulnerabilities (Logjam)	Nessus Network Monitor	Web Servers	6/22/2015	3/6/2019	medium
8791	OpenSSL 0.9.8 < 0.9.8zg / 1.0.0 < 1.0.0s Multiple Vulnerabilities	Nessus Network Monitor	Web Servers	6/22/2015	3/6/2019	medium
8981	Mac OS X < 10.10.5 Multiple Vulnerabilities	Nessus Network Monitor	Operating System Detection	10/16/2015	3/6/2019	high

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