Scientific Linux Security Update : expat on SL5.x, SL6.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 :

Expat is a C library written by James Clark for parsing XML documents.

A denial of service flaw was found in the implementation of hash
arrays in Expat. An attacker could use this flaw to make an
application using Expat consume an excessive amount of CPU time by
providing a specially-crafted XML file that triggers multiple hash
function collisions. To mitigate this issue, randomization has been
added to the hash function to reduce the chance of an attacker
successfully causing intentional collisions. (CVE-2012-0876)

A memory leak flaw was found in Expat. If an XML file processed by an
application linked against Expat triggered a memory re-allocation
failure, Expat failed to free the previously allocated memory. This
could cause the application to exit unexpectedly or crash when all
available memory is exhausted. (CVE-2012-1148)

All Expat users should upgrade to these updated packages, which
contain backported patches to correct these issues. After installing
the updated packages, applications using the Expat library must be
restarted for the update to take effect.

See also :

http://www.nessus.org/u?6c676e78

Solution :

Update the affected expat, expat-debuginfo and / or expat-devel
packages.

Risk factor :

Medium / CVSS Base Score : 5.0
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P)

Family: Scientific Linux Local Security Checks

Nessus Plugin ID: 61327 ()

Bugtraq ID:

CVE ID: CVE-2012-0876
CVE-2012-1148