RHEL 2.1 / 3 / 4 : openssl (RHSA-2005:476)

This script is Copyright (C) 2005-2014 Tenable Network Security, Inc.


Synopsis :

The remote Red Hat host is missing one or more security updates.

Description :

Updated OpenSSL packages that fix security issues are now available.

This update has been rated as having moderate security impact by the
Red Hat Security Response Team.

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

Colin Percival reported a cache timing attack that could allow a
malicious local user to gain portions of cryptographic keys. The
Common Vulnerabilities and Exposures project (cve.mitre.org) assigned
the name CVE-2005-0109 to the issue. The OpenSSL library has been
patched to add a new fixed-window mod_exp implementation as default
for RSA, DSA, and DH private-key operations. This patch is designed to
mitigate cache timing and potentially related attacks.

A flaw was found in the way the der_chop script creates temporary
files. It is possible that a malicious local user could cause der_chop
to overwrite files (CVE-2004-0975). The der_chop script was deprecated
and has been removed from these updated packages. Red Hat Enterprise
Linux 4 did not ship der_chop and is therefore not vulnerable to this
issue.

Users are advised to update to these erratum packages which contain
patches to correct these issues.

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

See also :

https://www.redhat.com/security/data/cve/CVE-2004-0975.html
https://www.redhat.com/security/data/cve/CVE-2005-0109.html
http://rhn.redhat.com/errata/RHSA-2005-476.html

Solution :

Update the affected packages.

Risk factor :

High / CVSS Base Score : 7.2
(CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C)

Family: Red Hat Local Security Checks

Nessus Plugin ID: 18409 ()

Bugtraq ID:

CVE ID: CVE-2004-0975
CVE-2005-0109