5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
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.
CPE | Name | Operator | Version |
---|---|---|---|
expat | eq | 2.0.1__9.1.el6 | |
expat | eq | 1.95.8__8.3.el5_5.3 | |
expat | eq | 1.95.8__8.3.el5_4.2 | |
expat:precise | eq | 2.0.1-7.2ubuntu1 |
expat.cvs.sourceforge.net/viewvc/expat/expat/lib/xmlparse.c?r1=1.166&r2=1.167
lists.apple.com/archives/security-announce/2015/Dec/msg00005.html
rhn.redhat.com/errata/RHSA-2012-0731.html
rhn.redhat.com/errata/RHSA-2016-0062.html
rhn.redhat.com/errata/RHSA-2016-2957.html
secunia.com/advisories/49504
secunia.com/advisories/51024
secunia.com/advisories/51040
sourceforge.net/projects/expat/files/expat/2.1.0/
sourceforge.net/tracker/?func=detail&atid=110127&aid=2958794&group_id=10127
www.debian.org/security/2012/dsa-2525
www.mandriva.com/security/advisories?name=MDVSA-2012:041
www.securityfocus.com/bid/52379
www.securitytracker.com/id/1034344
www.ubuntu.com/usn/USN-1527-1
www.ubuntu.com/usn/USN-1613-1
www.ubuntu.com/usn/USN-1613-2
access.redhat.com/security/updates/classification/#moderate
rhn.redhat.com/errata/RHSA-2012-0731.html
support.apple.com/HT205637