The SSL/TLS handshaking code in OpenSSL 0.9.7a, 0.9.7b, and 0.9.7c, when using Kerberos ciphersuites, does not properly check the length of Kerberos tickets during a handshake, which allows remote attackers to cause a denial of service (crash) via a crafted SSL/TLS handshake that causes an out-of-bounds read.

The version of OpenSSL installed on the remote host is prior to 0.9.7d. It is, therefore, affected by multiple vulnerabilities as referenced in the 0.9.7d advisory.

  - The SSL/TLS handshaking code in OpenSSL 0.9.7a, 0.9.7b, and 0.9.7c, when using Kerberos ciphersuites, does     not properly check the length of Kerberos tickets during a handshake, which allows remote attackers to     cause a denial of service (crash) via a crafted SSL/TLS handshake that causes an out-of-bounds read.
    (CVE-2004-0112)

  - The do_change_cipher_spec function in OpenSSL 0.9.6c to 0.9.6k, and 0.9.7a to 0.9.7c, allows remote     attackers to cause a denial of service (crash) via a crafted SSL/TLS handshake that triggers a null     dereference. (CVE-2004-0079)

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 remote server is running a version of OpenSSL that is earlier than 0.9.6m or 0.9.7d. 

A remote attacker can crash the server by sending an overly long Kerberos ticket or a crafted SSL/TLS handshake.

The remote host is running a version of Mac OS X 10.4 or 10.3 that does not have Security Update 2005-007 applied.

This security update contains fixes for the following products :

  - Apache 2
  - AppKit
  - Bluetooth
  - CoreFoundation
  - CUPS
  - Directory Services
  - HItoolbox
  - Kerberos
  - loginwindow
  - Mail
  - MySQL
  - OpenSSL
  - QuartzComposerScreenSaver
  - ping
  - Safari
  - SecurityInterface
  - servermgrd
  - servermgr_ipfilter
  - SquirelMail
  - traceroute
  - WebKit
  - WebLog Server
  - X11
  - zlib

Upgraded OpenSSL packages are available for Slackware 8.1, 9.0, 9.1, and -current. These fix two potential denial-of-service issues in earlier versions of OpenSSL. We recommend sites that use OpenSSL upgrade to the fixed packages right away.

s700_800 11.04 Webproxy server 2.0 update : 

Two potential security vulnerabilities have been identified in OpenSSL by NISCC (224012/1 and 224012/2). The Common Vulnerabilities and Exposures project has referenced them as the following CAN-2004-0079, and CAN-2004-0112. The CERT summary is TA04-078A. 1. The do_change_cipher_spec function in OpenSSL allows remote attackers to cause a denial of service via a crafted SSL/TLS handshake that triggers a null dereference. CVE-2004-0079 2. The SSL/TLS handshaking, when using Kerberos ciphersuites, does not properly check the length of Kerberos tickets during a handshake, which allows remote attackers to cause a denial of service via a crafted SSL/TLS handshake that causes an out-of-bounds read. CVE-2004-0112.

s700_800 11.04 Webproxy server 2.1 update : 

Two potential security vulnerabilities have been identified in OpenSSL by NISCC (224012/1 and 224012/2). The Common Vulnerabilities and Exposures project has referenced them as the following CAN-2004-0079, and CAN-2004-0112. The CERT summary is TA04-078A. 1. The do_change_cipher_spec function in OpenSSL allows remote attackers to cause a denial of service via a crafted SSL/TLS handshake that triggers a null dereference. CVE-2004-0079 2. The SSL/TLS handshaking, when using Kerberos ciphersuites, does not properly check the length of Kerberos tickets during a handshake, which allows remote attackers to cause a denial of service via a crafted SSL/TLS handshake that causes an out-of-bounds read. CVE-2004-0112.

s700_800 11.04 Virtualvault 4.5 OWS update : 

The remote HP-UX host is affected by multiple vulnerabilities :

  - Two potential security vulnerabilities have been     identified in OpenSSL by NISCC (224012/1 and 224012/2).
    The Common Vulnerabilities and Exposures project has     referenced them as the following CAN-2004-0079, and     CAN-2004-0112. The CERT summary is TA04-078A. 1. The     do_change_cipher_spec function in OpenSSL allows remote     attackers to cause a denial of service via a crafted     SSL/TLS handshake that triggers a null dereference.
    CVE-2004-0079 2. The SSL/TLS handshaking, when using     Kerberos ciphersuites, does not properly check the     length of Kerberos tickets during a handshake, which     allows remote attackers to cause a denial of service via     a crafted SSL/TLS handshake that causes an out-of-bounds     read. CVE-2004-0112. (HPSBUX01019 SSRT4717)

  - A potential security vulnerability has been identified     with Apache running on HP-UX where a buffer overflow     could be exploited remotely to execute arbitrary code.

  - A potential security vulnerability has been identified     with HP-UX running Apache where the vulnerability could     be exploited remotely to create a Denial of Service     (DoS) or to execute arbitrary code.

  - A potential security vulnerability has been identified     with Apache running on HP-UX where the vulnerability     could be exploited remotely to create a Denial of     Service (DoS) or to bypass access restrictions.

s700_800 11.04 Virtualvault 4.6 TGP update : 

Two potential security vulnerabilities have been identified in OpenSSL by NISCC (224012/1 and 224012/2). The Common Vulnerabilities and Exposures project has referenced them as the following CAN-2004-0079, and CAN-2004-0112. The CERT summary is TA04-078A. 1. The do_change_cipher_spec function in OpenSSL allows remote attackers to cause a denial of service via a crafted SSL/TLS handshake that triggers a null dereference. CVE-2004-0079 2. The SSL/TLS handshaking, when using Kerberos ciphersuites, does not properly check the length of Kerberos tickets during a handshake, which allows remote attackers to cause a denial of service via a crafted SSL/TLS handshake that causes an out-of-bounds read. CVE-2004-0112.

s700_800 11.04 Virtualvault 4.6 OWS update : 

Two potential security vulnerabilities have been identified in OpenSSL by NISCC (224012/1 and 224012/2). The Common Vulnerabilities and Exposures project has referenced them as the following CAN-2004-0079, and CAN-2004-0112. The CERT summary is TA04-078A. 1. The do_change_cipher_spec function in OpenSSL allows remote attackers to cause a denial of service via a crafted SSL/TLS handshake that triggers a null dereference. CVE-2004-0079 2. The SSL/TLS handshaking, when using Kerberos ciphersuites, does not properly check the length of Kerberos tickets during a handshake, which allows remote attackers to cause a denial of service via a crafted SSL/TLS handshake that causes an out-of-bounds read. CVE-2004-0112.

s700_800 11.04 Virtualvault 4.6 OpenSSH update : 

Two potential security vulnerabilities have been identified in OpenSSL by NISCC (224012/1 and 224012/2). The Common Vulnerabilities and Exposures project has referenced them as the following CAN-2004-0079, and CAN-2004-0112. The CERT summary is TA04-078A. 1. The do_change_cipher_spec function in OpenSSL allows remote attackers to cause a denial of service via a crafted SSL/TLS handshake that triggers a null dereference. CVE-2004-0079 2. The SSL/TLS handshaking, when using Kerberos ciphersuites, does not properly check the length of Kerberos tickets during a handshake, which allows remote attackers to cause a denial of service via a crafted SSL/TLS handshake that causes an out-of-bounds read. CVE-2004-0112.

s700_800 11.04 Virtualvault 4.6 IWS update : 

Two potential security vulnerabilities have been identified in OpenSSL by NISCC (224012/1 and 224012/2). The Common Vulnerabilities and Exposures project has referenced them as the following CAN-2004-0079, and CAN-2004-0112. The CERT summary is TA04-078A. 1. The do_change_cipher_spec function in OpenSSL allows remote attackers to cause a denial of service via a crafted SSL/TLS handshake that triggers a null dereference. CVE-2004-0079 2. The SSL/TLS handshaking, when using Kerberos ciphersuites, does not properly check the length of Kerberos tickets during a handshake, which allows remote attackers to cause a denial of service via a crafted SSL/TLS handshake that causes an out-of-bounds read. CVE-2004-0112.

s700_800 11.04 Virtualvault 4.7 TGP update : 

Two potential security vulnerabilities have been identified in OpenSSL by NISCC (224012/1 and 224012/2). The Common Vulnerabilities and Exposures project has referenced them as the following CAN-2004-0079, and CAN-2004-0112. The CERT summary is TA04-078A. 1. The do_change_cipher_spec function in OpenSSL allows remote attackers to cause a denial of service via a crafted SSL/TLS handshake that triggers a null dereference. CVE-2004-0079 2. The SSL/TLS handshaking, when using Kerberos ciphersuites, does not properly check the length of Kerberos tickets during a handshake, which allows remote attackers to cause a denial of service via a crafted SSL/TLS handshake that causes an out-of-bounds read. CVE-2004-0112.

s700_800 11.04 Virtualvault 4.7 OWS update : 

Two potential security vulnerabilities have been identified in OpenSSL by NISCC (224012/1 and 224012/2). The Common Vulnerabilities and Exposures project has referenced them as the following CAN-2004-0079, and CAN-2004-0112. The CERT summary is TA04-078A. 1. The do_change_cipher_spec function in OpenSSL allows remote attackers to cause a denial of service via a crafted SSL/TLS handshake that triggers a null dereference. CVE-2004-0079 2. The SSL/TLS handshaking, when using Kerberos ciphersuites, does not properly check the length of Kerberos tickets during a handshake, which allows remote attackers to cause a denial of service via a crafted SSL/TLS handshake that causes an out-of-bounds read. CVE-2004-0112.

s700_800 11.04 Virtualvault 4.7 OpenSSH update : 

Two potential security vulnerabilities have been identified in OpenSSL by NISCC (224012/1 and 224012/2). The Common Vulnerabilities and Exposures project has referenced them as the following CAN-2004-0079, and CAN-2004-0112. The CERT summary is TA04-078A. 1. The do_change_cipher_spec function in OpenSSL allows remote attackers to cause a denial of service via a crafted SSL/TLS handshake that triggers a null dereference. CVE-2004-0079 2. The SSL/TLS handshaking, when using Kerberos ciphersuites, does not properly check the length of Kerberos tickets during a handshake, which allows remote attackers to cause a denial of service via a crafted SSL/TLS handshake that causes an out-of-bounds read. CVE-2004-0112.

s700_800 11.04 Virtualvault 4.7 IWS update : 

Two potential security vulnerabilities have been identified in OpenSSL by NISCC (224012/1 and 224012/2). The Common Vulnerabilities and Exposures project has referenced them as the following CAN-2004-0079, and CAN-2004-0112. The CERT summary is TA04-078A. 1. The do_change_cipher_spec function in OpenSSL allows remote attackers to cause a denial of service via a crafted SSL/TLS handshake that triggers a null dereference. CVE-2004-0079 2. The SSL/TLS handshaking, when using Kerberos ciphersuites, does not properly check the length of Kerberos tickets during a handshake, which allows remote attackers to cause a denial of service via a crafted SSL/TLS handshake that causes an out-of-bounds read. CVE-2004-0112.

s700_800 11.04 Virtualvault 4.5 IWS Update : 

The remote HP-UX host is affected by multiple vulnerabilities :

  - A potential security vulnerability has been identified     with Apache running on HP-UX where the vulnerability     could be exploited remotely to create a Denial of     Service (DoS) or to bypass access restrictions.

  - A potential security vulnerability has been identified     with HP-UX running Apache where the vulnerability could     be exploited remotely to create a Denial of Service     (DoS) or to execute arbitrary code.

  - A potential security vulnerability has been identified     with Apache running on HP-UX where a buffer overflow     could be exploited remotely to execute arbitrary code.

  - Two potential security vulnerabilities have been     identified in OpenSSL by NISCC (224012/1 and 224012/2).
    The Common Vulnerabilities and Exposures project has     referenced them as the following CAN-2004-0079, and     CAN-2004-0112. The CERT summary is TA04-078A. 1. The     do_change_cipher_spec function in OpenSSL allows remote     attackers to cause a denial of service via a crafted     SSL/TLS handshake that triggers a null dereference.
    CVE-2004-0079 2. The SSL/TLS handshaking, when using     Kerberos ciphersuites, does not properly check the     length of Kerberos tickets during a handshake, which     allows remote attackers to cause a denial of service via     a crafted SSL/TLS handshake that causes an out-of-bounds     read. CVE-2004-0112. (HPSBUX01019 SSRT4717)

The remote host is using a version of OpenSSL that is older than 0.9.6m or 0.9.7d  There are several vulnerabilities in this version of OpenSSL that may allow an attacker to cause a denial of service against the remote host.

The remote host is affected by the vulnerability described in GLSA-200403-03 (Multiple OpenSSL Vulnerabilities)

    Testing performed by the OpenSSL group using the Codenomicon TLS Test     Tool uncovered a NULL pointer assignment in the do_change_cipher_spec()     function. A remote attacker could perform a carefully crafted SSL/TLS     handshake against a server that used the OpenSSL library in such a way     as to cause OpenSSL to crash. Depending on the application this could     lead to a denial of service. All versions of OpenSSL from 0.9.6c to     0.9.6l inclusive and from 0.9.7a to 0.9.7c inclusive are affected by     this issue.
    A flaw has been discovered in SSL/TLS handshaking code when using     Kerberos ciphersuites. A remote attacker could perform a carefully     crafted SSL/TLS handshake against a server configured to use Kerberos     ciphersuites in such a way as to cause OpenSSL to crash. Most     applications have no ability to use Kerberos cipher suites and will     therefore be unaffected. Versions 0.9.7a, 0.9.7b, and 0.9.7c of OpenSSL     are affected by this issue.
    Testing performed by the OpenSSL group using the Codenomicon TLS Test     Tool uncovered a bug in older versions of OpenSSL 0.9.6 that can lead     to a Denial of Service attack (infinite loop). This issue was traced to     a fix that was added to OpenSSL 0.9.6d some time ago. This issue will     affect vendors that ship older versions of OpenSSL with backported     security patches.
  Impact :

    Although there are no public exploits known for bug, users are     recommended to upgrade to ensure the security of their infrastructure.
  Workaround :

    There is no immediate workaround; a software upgrade is required. The     vulnerable function in the code has been rewritten.

A vulnerability was discovered by the OpenSSL group using the Codenomicon TLS Test Tool. The test uncovered a NULL pointer assignment in the do_change_cipher_spec() function whih could be abused by a remote attacker crafting a special SSL/TLS handshake against a server that used the OpenSSL library in such a way as to cause OpenSSL to crash. Depending on the application in question, this could lead to a Denial of Service (DoS). This vulnerability affects both OpenSSL 0.9.6 (0.9.6c-0.9.6k) and 0.9.7 (0.9.7a-0.9.7c). CVE has assigned CVE-2004-0079 to this issue.

Another vulnerability was discovered by Stephen Henson in OpenSSL versions 0.9.7a-0.9.7c; there is a flaw in the SSL/TLS handshaking code when using Kerberos ciphersuites. A remote attacker could perform a carefully crafted SSL/TLS handshake against a server configured to use Kerberos ciphersuites in such a way as to cause OpenSSL to crash.
CVE has assigned CVE-2004-0112 to this issue.

Mandrakesoft urges users to upgrade to the packages provided that have been patched to protect against these problems. We would also like to thank NISCC for their assistance in coordinating the disclosure of these problems.

Please note that you will need to restart any SSL-enabled services for the patch to be effective, including (but not limited to) Apache, OpenLDAP, etc.

The remote host is missing the patch for the advisory SuSE-SA:2004:007 (openssl).


OpenSSL is an implementation of the Secure Socket Layer (SSL v2/3) and Transport Layer Security (TLS v1) protocol.
The NISCC informed us about to failure conditions in openssl that can be triggered to crash applications that use the openssl library.
The first bug occurs during SSL/TLS handshake in the function do_change_cipher_spec() due to a NULL pointer assignment.
The second bug affects openssl version 0.9.7* only with Kerberos cipher suite enabled and can be triggered during SSL/TLS handshake too.

Please download the update package for your distribution and verify its integrity by the methods listed in section 3) of this announcement.
Then, install the package using the command 'rpm -Fhv file.rpm' to apply the update.

Updated OpenSSL packages that fix several remote denial of service vulnerabilities are available for Red Hat Enterprise Linux 3.

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

Testing performed by the OpenSSL group using the Codenomicon TLS Test Tool uncovered a NULL pointer assignment in the do_change_cipher_spec() function in OpenSSL 0.9.6c-0.9.6k and 0.9.7a-0.9.7c. A remote attacker could perform a carefully crafted SSL/TLS handshake against a server that uses the OpenSSL library in such a way as to cause OpenSSL to crash. Depending on the application this could lead to a denial of service. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2004-0079 to this issue.

Stephen Henson discovered a flaw in SSL/TLS handshaking code when using Kerberos ciphersuites in OpenSSL 0.9.7a-0.9.7c. A remote attacker could perform a carefully crafted SSL/TLS handshake against a server configured to use Kerberos ciphersuites in such a way as to cause OpenSSL to crash. Most applications have no ability to use Kerberos ciphersuites and will therefore be unaffected by this issue.
The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2004-0112 to this issue.

Testing performed by the OpenSSL group using the Codenomicon TLS Test Tool uncovered a bug in older versions of OpenSSL 0.9.6 prior to 0.9.6d that may lead to a denial of service attack (infinite loop).
The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2004-0081 to this issue. This issue affects only the OpenSSL compatibility packages shipped with Red Hat Enterprise Linux 3.

These updated packages contain patches provided by the OpenSSL group that protect against these issues.

Additionally, the version of libica included in the OpenSSL packages has been updated to 1.3.5. This only affects IBM s390 and IBM eServer zSeries customers and is required for the latest openCryptoki packages.

NOTE: Because server applications are affected by this issue, users are advised to either restart all services that use OpenSSL functionality or restart their systems after installing these updates.

According to its banner, the remote host is using a version of OpenSSL which is older than 0.9.6m / 0.9.7d.  There are several bugs in such versions that may allow an attacker to cause a denial of service against the remote host.

ID	Name	Product	Family	Severity
200196	OpenSSL 0.9.7 < 0.9.7d Multiple Vulnerabilities	Nessus	Web Servers	high
17750	OpenSSL < 0.9.6m / 0.9.7d Denial of Service	Nessus	Web Servers	medium
19463	Mac OS X Multiple Vulnerabilities (Security Update 2005-007)	Nessus	MacOS X Local Security Checks	critical
18785	Slackware 8.1 / 9.0 / 9.1 / current : OpenSSL security update (SSA:2004-077-01)	Nessus	Slackware Local Security Checks	medium
17534	HP-UX PHSS_30650 : HP-UX Running Apache, Remote Denial of Service (DoS) (HPSBUX01019 SSRT4717 rev.3)	Nessus	HP-UX Local Security Checks	medium
17533	HP-UX PHSS_30649 : HP-UX Running Apache, Remote Denial of Service (DoS) (HPSBUX01019 SSRT4717 rev.3)	Nessus	HP-UX Local Security Checks	medium
17532	HP-UX PHSS_30648 : s700_800 11.04 Virtualvault 4.5 OWS update	Nessus	HP-UX Local Security Checks	medium
17531	HP-UX PHSS_30646 : HP-UX Running Apache, Remote Denial of Service (DoS) (HPSBUX01019 SSRT4717 rev.3)	Nessus	HP-UX Local Security Checks	medium
17530	HP-UX PHSS_30645 : HP-UX Running Apache, Remote Denial of Service (DoS) (HPSBUX01019 SSRT4717 rev.3)	Nessus	HP-UX Local Security Checks	medium
17529	HP-UX PHSS_30644 : HP-UX Running Apache, Remote Denial of Service (DoS) (HPSBUX01019 SSRT4717 rev.3)	Nessus	HP-UX Local Security Checks	medium
17528	HP-UX PHSS_30643 : HP-UX Running Apache, Remote Denial of Service (DoS) (HPSBUX01019 SSRT4717 rev.3)	Nessus	HP-UX Local Security Checks	medium
17527	HP-UX PHSS_30642 : HP-UX Running Apache, Remote Denial of Service (DoS) (HPSBUX01019 SSRT4717 rev.3)	Nessus	HP-UX Local Security Checks	medium
17526	HP-UX PHSS_30641 : HP-UX Running Apache, Remote Denial of Service (DoS) (HPSBUX01019 SSRT4717 rev.3)	Nessus	HP-UX Local Security Checks	medium
17525	HP-UX PHSS_30640 : HP-UX Running Apache, Remote Denial of Service (DoS) (HPSBUX01019 SSRT4717 rev.3)	Nessus	HP-UX Local Security Checks	medium
17071	HP-UX PHSS_30639 : HP-UX Running Apache, Remote Denial of Service (DoS) (HPSBUX01019 SSRT4717 rev.3)	Nessus	HP-UX Local Security Checks	medium
17070	HP-UX PHSS_30647 : s700_800 11.04 Virtualvault 4.5 IWS Update	Nessus	HP-UX Local Security Checks	medium
2183	OpenSSL < 0.9.6m / 0.9.7d Multiple DoS	Nessus Network Monitor	Web Servers	medium
14454	GLSA-200403-03 : Multiple OpenSSL Vulnerabilities	Nessus	Gentoo Local Security Checks	medium
14122	Mandrake Linux Security Advisory : openssl (MDKSA-2004:023)	Nessus	Mandriva Local Security Checks	medium
13825	SuSE-SA:2004:007: openssl	Nessus	SuSE Local Security Checks	medium
12480	RHEL 3 : openssl (RHSA-2004:120)	Nessus	Red Hat Local Security Checks	medium
12110	OpenSSL < 0.9.6m / 0.9.7d Multiple Remote DoS	Nessus	Web Servers	medium
801058	OpenSSL < 0.9.6m / 0.9.7d Multiple DoS	Log Correlation Engine	Web Servers	medium

Detections

Analytics

CVE-2004-0112

high

Tenable Plugins

high

medium

critical

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium