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Test ID:
Category:Red Hat Local Security Checks
Title:RedHat Security Advisory RHSA-2007:1003

The remote host is missing updates announced in
advisory RHSA-2007:1003.

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

A flaw was found in the SSL_get_shared_ciphers() utility function. An
attacker could send a list of ciphers to an application that used this
function and overrun a buffer by a single byte (CVE-2007-5135). Few
applications make use of this vulnerable function and generally it is used
only when applications are compiled for debugging.

A number of possible side-channel attacks were discovered affecting
OpenSSL. A local attacker could possibly obtain RSA private keys being used
on a system. In practice these attacks would be difficult to perform
outside of a lab environment. This update contains backported patches to
mitigate these issues. (CVE-2007-3108)

As well, these updated packages fix the following bugs:

* multithreaded applications could cause a segmentation fault or deadlock
when calling the random number generator initialization (RAND_poll) in the
OpenSSL library, for a large number of threads simultaneously.

* in certain circumstances, if an application using the OpenSSL library
reused the SSL session cache for multiple purposes (with various parameters
of the SSL protocol), the session parameters could be mismatched.

* a segmentation fault could occur when a corrupted pkcs12 file was being
loaded using the openssl pkcs12 -in [pkcs12-file] command, where
[pkcs12-file] is the pkcs12 file.

Users of OpenSSL should upgrade to these updated packages, which contain
backported patches to resolve these issues.

Note: After installing this update, users are advised to either restart all
services that use OpenSSL or restart their system.

Please note that this update is available via
Red Hat Network. To use Red Hat Network, launch the Red
Hat Update Agent with the following command: up2date

Risk factor : High

CVSS Score:

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2007-3108
BugTraq ID: 25163
Bugtraq: 20070813 FLEA-2007-0043-1 openssl (Google Search)
Bugtraq: 20080108 VMSA-2008-0001 Moderate OpenPegasus PAM Authentication Buffer Overflow and updated service console packages (Google Search)
Bugtraq: 20080123 UPDATED VMSA-2008-0001.1 Moderate OpenPegasus PAM Authentication Buffer Overflow and updated service console packages (Google Search)
CERT/CC vulnerability note: VU#724968
Debian Security Information: DSA-1571 (Google Search)
Common Vulnerability Exposure (CVE) ID: CVE-2007-5135
BugTraq ID: 25831
Bugtraq: 20070927 OpenSSL SSL_get_shared_ciphers() off-by-one buffer overflow (Google Search)
Bugtraq: 20071004 Re: OpenSSL SSL_get_shared_ciphers() off-by-one buffer overflow (Google Search)
Bugtraq: 20071003 FLEA-2007-0058-1 openssl openssl-scripts (Google Search)
Debian Security Information: DSA-1379 (Google Search)
FreeBSD Security Advisory: FreeBSD-SA-07:08
HPdes Security Advisory: HPSBUX02292
HPdes Security Advisory: SSRT071499
NETBSD Security Advisory: NetBSD-SA2008-007
OpenBSD Security Advisory: [4.0] 017: SECURITY FIX: October 10, 2007
OpenBSD Security Advisory: [4.1] 011: SECURITY FIX: October 10, 2007
OpenBSD Security Advisory: [4.2] 002: SECURITY FIX: October 10, 2007
SuSE Security Announcement: SUSE-SR:2007:020 (Google Search)
SuSE Security Announcement: SUSE-SR:2008:005 (Google Search)
XForce ISS Database: openssl-sslgetshared-bo(36837)
CopyrightCopyright (c) 2007 E-Soft Inc.

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