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Test ID:1.3.6.1.4.1.25623.1.0.870754
Category:Red Hat Local Security Checks
Title:RedHat Update for expat RHSA-2012:0731-01
Summary:The remote host is missing an update for the 'expat'; package(s) announced via the referenced advisory.
Description:Summary:
The remote host is missing an update for the 'expat'
package(s) announced via the referenced advisory.

Vulnerability Insight:
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.

Affected Software/OS:
expat on Red Hat Enterprise Linux (v. 5 server),
Red Hat Enterprise Linux Desktop (v. 6),
Red Hat Enterprise Linux Server (v. 6),
Red Hat Enterprise Linux Workstation (v. 6)

Solution:
Please Install the Updated Packages.

CVSS Score:
5.0

CVSS Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:P

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2012-0876
http://lists.apple.com/archives/security-announce/2013/Oct/msg00004.html
http://lists.apple.com/archives/security-announce/2015/Dec/msg00005.html
BugTraq ID: 52379
http://www.securityfocus.com/bid/52379
Debian Security Information: DSA-2525 (Google Search)
http://www.debian.org/security/2012/dsa-2525
http://www.mandriva.com/security/advisories?name=MDVSA-2012:041
http://bugs.python.org/issue13703#msg151870
http://mail.libexpat.org/pipermail/expat-discuss/2012-March/002768.html
RedHat Security Advisories: RHSA-2012:0731
http://rhn.redhat.com/errata/RHSA-2012-0731.html
RedHat Security Advisories: RHSA-2016:0062
http://rhn.redhat.com/errata/RHSA-2016-0062.html
RedHat Security Advisories: RHSA-2016:2957
http://rhn.redhat.com/errata/RHSA-2016-2957.html
http://secunia.com/advisories/49504
http://secunia.com/advisories/51024
http://secunia.com/advisories/51040
http://www.ubuntu.com/usn/USN-1527-1
http://www.ubuntu.com/usn/USN-1613-1
http://www.ubuntu.com/usn/USN-1613-2
Common Vulnerability Exposure (CVE) ID: CVE-2012-1148
http://www.securitytracker.com/id/1034344
CopyrightCopyright (c) 2012 Greenbone Networks GmbH

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