Fedora 16 : expat-2.1.0-1.fc16 (2012-5058)

medium Nessus Plugin ID 58924
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.


The remote Fedora host is missing a security update.


This update includes expat 2.1.0, which fixes includes a fix for a security issue.

A specially crafted set of keys could trigger hash function collisions, which degrade dictionary performance by changing hash table operations complexity from an expected/average O(1) to the worst case O(n). Reporters were able to find colliding strings efficiently using meet in the middle attack. (CVE-2012-0876)

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


Update the affected expat package.

See Also



Plugin Details

Severity: Medium

ID: 58924

File Name: fedora_2012-5058.nasl

Version: 1.13

Type: local

Agent: unix

Published: 5/1/2012

Updated: 1/11/2021

Dependencies: ssh_get_info.nasl

Risk Information


Risk Factor: Low

Score: 2.7


Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.7

Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P

Temporal Vector: E:ND/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:fedoraproject:fedora:expat, cpe:/o:fedoraproject:fedora:16

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 3/31/2012

Reference Information

CVE: CVE-2012-0876

BID: 52379

FEDORA: 2012-5058