OpenSSL SSL_get_shared_ciphers() off-by-one buffer overflow

openssl-sslgetshared-bo (36837)

High Risk

Description:

OpenSSL is vulnerable to an off-by-one buffer overflow, caused by improper bounds checking by the SSL_get_shared_ciphers() function. By sending multiple cipher strings to the last character of the current cipher string, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the server to crash.

Consequences:

Gain Access

Remedy:

Upgrade to the latest version of OpenSSL (0.98f or later), available from the OpenSSL Web site. See References.

For IBM HMC 6 Release 1.3:
Apply the Security fix for HMC Version 6 Release 1.3, available from the IBM Subscription service. See References.

For IBM HMC 7 Release 3.2.0:
Apply the Security fix for HMC Version 7 Release 3.2.0, available from the IBM Subscription service. See References.

Refer to VMSA-2008-0001 for patch, upgrade or suggested workaround information, available from the Security-announce Mailing List, Mon Jan 7 17:46:23 PST 2008. See References.

For other distributions:
Apply the appropriate update for your system. See References.

References:

• Apple Web site: About Security Update 2008-005.
• BugTraq Mailing List, Thu Sep 27 2007 - 11:21:40 CDT : OpenSSL SSL_get_shared_ciphers() off-by-one buffer overflow.
• FreeBSD-SA-07:08.openssl : Buffer overflow in OpenSSL SSL_get_shared_ciphers().
• IBM Subscription service: Security fix for HMC Version 7 Release 3.2.0.
• IBM Subscription service: Security fix for HMC Version 6 Release 1.3.
• IBM Systems Support Web site: Support for HMC.
• OpenBSD 4.2 release errata & patch list: 002: SECURITY FIX: October 10, 2007 : The SSL_get_shared_ciphers() function in OpenSSL contains an off-by-one overflow..
• OpenSSL CVS Repository: OpenSSL_0_9_8-stable branch.
• OpenSSL Security Advisory [12-Oct-2007]: flaw in OpenSSL's DTLS implementation which could lead to the compromise of clients and servers with DTLS enabled.
• OpenSSL Web site: OpenSSL:The Open Source toolkit for SSL/TLS.
• Security-announce Mailing List, Mon Jan 7 17:46:23 PST 2008 : VMSA-2008-0001 Moderate OpenPegasus PAM Authentication Buffer Overflow and updated service console packages.
• Sun Alert ID: 103130: Security Vulnerability in Solaris 10 OpenSSL SSL_get_shared_ciphers() Function.
• Sun Alert ID: 200858: Security Vulnerability in Solaris 10 OpenSSL SSL_get_shared_ciphers() Function.
• VMSA-2008-0013: Updated ESX packages for OpenSSL, net-snmp, perl.
• ASA-2007-481: Security Vulnerability in Solaris 10 OpenSSL SSL_get_shared_ciphers() Function (Sun 103130)
• ASA-2007-485: OpenSSL security update (RHSA-2007-0813)
• ASA-2007-522: HP-UX Running Apache Remote Execution of Arbitrary Code (HPSBUX02292)
• ASA-2007-524: OpenSSL security and bug fix update (RHSA-2007-1003)
• BID-25831: OpenSSL SSL_Get_Shared_Ciphers Off-by-One Buffer Overflow Vulnerability
• CVE-2007-5135: Off-by-one error in the SSL_get_shared_ciphers function in OpenSSL 0.9.7 up to 0.9.7l, and 0.9.8 up to 0.9.8f, might allow remote attackers to execute arbitrary code via a crafted packet that triggers a one-byte buffer underflow. NOTE: this issue was introduced as a result of a fix for CVE-2006-3738. As of 20071012, it is unknown whether code execution is possible.
• DSA-1379: openssl -- off-by-one error/buffer overflow
• GLSA-200710-06: OpenSSL: Multiple vulnerabilities
• GLSA-200805-07: Linux Terminal Server Project: Multiple vulnerabilities
• MDKSA-2007:193: Updated openssl packages fix vulnerabilities
• RHSA-2007-0813: Moderate: openssl security update
• RHSA-2007-0964: Important: openssl security update
• RHSA-2007-1003: Moderate: openssl security and bug fix update
• SA22130: OpenSSL Multiple Vulnerabilities
• SA27021: Ubuntu update for openssl
• SA27078: Mandriva update for openssl
• SA27097: Gentoo update for openssl
• SA27205: Red Hat update for openssl
• SA27330: Red Hat update for openssl
• SA27394: Sun Solaris 10 OpenSSL "SSL_get_shared_ciphers()" Vulnerability
• SA27870: Avaya Products OpenSSL Vulnerabilities
• SA27961: IBM HMC Multiple Vulnerabilities
• SA28368: VMware ESX Server Multiple Security Updates
• SA28667: IBM Hardware Management Console Pegasus CIM Denial of Service
• SA30161: Gentoo ltsp Multiple Vulnerabilities
• SA31326: Apple Mac OS X Security Update Fixes Multiple Vulnerabilities
• SA31467: VMware updates for OpenSSL, net-snmp, and perl
• SA31489: VMware ESXi OpenSSL Vulnerabilities
• SECTRACK ID: 1018755: OpenSSL Off-by-one Overflow in SL_get_shared_ciphers() Lets Remote Users Execute Arbitrary Code
• SUSE-SR:2007:020: SUSE Security Summary Report
• SUSE-SR:2008:005: SUSE Security Summary Report

Platforms Affected:

• Apple Mac OS X 10.4.11
• Apple Mac OS X 10.5.4
• Apple Mac OS X Server 10.4.11
• Apple Mac OS X Server 10.5.4
• Avaya Application Enablement Services 3.1.2
• Avaya Application Enablement Services 3.1.3
• Avaya Application Enablement Services 3.1.4
• Avaya Communication Manager 2.0
• Avaya Communication Manager 2.0.1
• Avaya Communication Manager 2.1
• Avaya Communication Manager 3.0
• Avaya Communication Manager 3.1
• Avaya Converged Communications Server 2.0
• Avaya Converged Communications Server 2.0.1
• Avaya Converged Communications Server 2.1
• Avaya Converged Communications Server 3.0
• Avaya Converged Communications Server 3.1
• Avaya Expanded Meet-Me Conferencing 1.017
• Avaya Expanded Meet-Me Conferencing 1.021
• Canonical Ubuntu 6.06 LTS
• Canonical Ubuntu 6.10
• Canonical Ubuntu 7.04
• Debian Debian Linux 3.1
• Debian Debian Linux 4.0
• FreeBSD FreeBSD
• Gentoo Linux
• IBM Hardware Management Console 6.1.3
• IBM Hardware Management Console 7.3.2.0
• MandrakeSoft Mandrake Linux 2007
• MandrakeSoft Mandrake Linux 2007 X86_64
• MandrakeSoft Mandrake Linux 2007.1
• MandrakeSoft Mandrake Linux 2007.1 X86_64
• MandrakeSoft Mandrake Linux 2008.0 X86_64
• MandrakeSoft Mandrake Linux Corporate Server 3.0
• MandrakeSoft Mandrake Linux Corporate Server 3.0 X86_64
• MandrakeSoft Mandrake Linux Corporate Server 4.0 X86_64
• MandrakeSoft Mandrake Linux Corporate Server 4.0
• MandrakeSoft Mandrake Multi Network Firewall 2.0
• OpenBSD OpenBSD prior to 4.2
• OpenSSL OpenSSL 0.9.7
• OpenSSL OpenSSL 0.9.7 Beta5
• OpenSSL OpenSSL 0.9.7 Beta4
• OpenSSL OpenSSL 0.9.7 Beta3
• OpenSSL OpenSSL 0.9.7 Beta6
• OpenSSL OpenSSL 0.9.7 Beta1
• OpenSSL OpenSSL 0.9.7 Beta2
• OpenSSL OpenSSL 0.9.7a
• OpenSSL OpenSSL 0.9.7b
• OpenSSL OpenSSL 0.9.7c
• OpenSSL OpenSSL 0.9.7d
• OpenSSL OpenSSL 0.9.7e
• OpenSSL OpenSSL 0.9.7f
• OpenSSL OpenSSL 0.9.7g
• OpenSSL OpenSSL 0.9.7h
• OpenSSL OpenSSL 0.9.7i
• OpenSSL OpenSSL 0.9.7j
• OpenSSL OpenSSL 0.9.7k
• OpenSSL OpenSSL 0.9.8
• OpenSSL OpenSSL 0.9.8a
• OpenSSL OpenSSL 0.9.8b
• OpenSSL OpenSSL 0.9.8c
• OpenSSL OpenSSL 0.9.8d
• OpenSSL OpenSSL 0.9.8e
• RedHat Enterprise Linux 2.1 AS
• RedHat Enterprise Linux 2.1 ES
• RedHat Enterprise Linux 2.1 WS
• RedHat Enterprise Linux 3 WS
• RedHat Enterprise Linux 3 ES
• RedHat Enterprise Linux 3 AS
• RedHat Enterprise Linux 3 Desktop
• RedHat Enterprise Linux 4 AS
• RedHat Enterprise Linux 4 WS
• RedHat Enterprise Linux 4 ES
• RedHat Enterprise Linux 4 Desktop
• RedHat Enterprise Linux 5 Client Workstation
• RedHat Enterprise Linux 5
• RedHat Enterprise Linux 5 Client
• RedHat Linux Advanced Workstation 2.1 Itanium
• Sun Solaris 10 SPARC
• Sun Solaris 10 x86
• SUSE SuSE Linux
• Turbolinux Turbolinux 10 Server
• Turbolinux Turbolinux 10 Server x64 Ed
• Turbolinux Turbolinux 11 Server
• Turbolinux Turbolinux 11 Server x64 Ed
• Turbolinux Turbolinux 8 Server
• Turbolinux Turbolinux FUJI
• Turbolinux Turbolinux Multimedia
• Turbolinux Turbolinux Personal
• Turbolinux Turbolinux wizpy
• Turbolinux Turbolinux Appliance Server 1.0 Hosting Ed
• Turbolinux Turbolinux Appliance Server 1.0 Workgroup Ed
• Turbolinux Turbolinux Appliance Server 2.0
• VMware ESX Server 2.5.4
• VMware ESX Server 2.5.5
• VMware ESX Server 3.0.1
• VMware ESX Server 3.0.2
• VMware ESXi Server 3.5

Reported:

Sep 27, 2007

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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