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Overview

Id RHSA-2012:0731-01
Name Red Hat 2012:0731-01 RHSA Moderate: expat security update for RHEL 5 x86
Vendor Name red_hat
Product None
Content Type Critical Critical
Language(s)
Operating System(s) Linux 
Released On 13 Jun 2012 12:00:00

RHSA-2012:0731-01

Red Hat 2012:0731-01 RHSA Moderate: expat security update for RHEL 5 x86

Vendor Name

red_hat

Product

None

Released On

13 Jun 2012 12:00:00

Url

https://rhn.redhat.com/errata/RHSA-2012-0731.html

Description

LSAC(v2)
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.

Related Resources

Related Vulnerabilities

CVE-2012-0876   CVE-2012-1148  

Related Patches

Superseded Patches

None


Last Updated: 27 May 2016 11:14:15