Detections
Analytics
CentOS 5 / 6 : expat (CESA-2012:0731)
medium Nessus Plugin ID 59482
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Synopsis
The remote CentOS host is missing one or more security updates.Description
Updated expat packages that fix two security issues are now available for Red Hat Enterprise Linux 5 and 6.The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.
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.
Solution
Update the affected expat packages.See Also
Plugin Details
Severity: Medium
ID: 59482
File Name: centos_RHSA-2012-0731.nasl
Version: 1.18
Type: local
Agent: unix
Family: CentOS Local Security Checks
Published: 6/14/2012
Updated: 1/4/2021
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Agentless Assessment, Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.6
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 3.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS Score Source: CVE-2012-1148
Vulnerability Information
CPE: p-cpe:/a:centos:centos:expat, p-cpe:/a:centos:centos:expat-devel, cpe:/o:centos:centos:5, cpe:/o:centos:centos:6
Required KB Items: Host/local_checks_enabled, Host/CentOS/release, Host/CentOS/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 6/13/2012
Vulnerability Publication Date: 7/3/2012
Reference Information
CVE: CVE-2012-0876, CVE-2012-1148
BID: 52379
RHSA: 2012:0731