Scientific Linux Security Update : openssl on SL4.x, SL5.x i386/x86_64

This script is Copyright (C) 2012 Tenable Network Security, Inc.


Synopsis :

The remote Scientific Linux host is missing one or more security
updates.

Description :

A ciphersuite downgrade flaw was found in the OpenSSL SSL/TLS server
code. A remote attacker could possibly use this flaw to change the
ciphersuite associated with a cached session stored on the server, if
the server enabled the SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG option,
possibly forcing the client to use a weaker ciphersuite after resuming
the session. (CVE-2010-4180, CVE-2008-7270)

Note: With this update, setting the
SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG option has no effect and this
bug workaround can no longer be enabled.

It was discovered that OpenSSL did not always check the return value
of the bn_wexpand() function. An attacker able to trigger a memory
allocation failure in that function could possibly crash an
application using the OpenSSL library and its UBSEC hardware engine
support. (CVE-2009-3245 - SL4 Only)

For the update to take effect, all services linked to the OpenSSL
library must be restarted, or the system rebooted.

See also :

http://www.nessus.org/u?5830a881

Solution :

Update the affected openssl, openssl-devel and / or openssl-perl
packages.

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)

Family: Scientific Linux Local Security Checks

Nessus Plugin ID: 60921 ()

Bugtraq ID:

CVE ID: CVE-2008-7270
CVE-2009-3245
CVE-2010-4180