CentOS 3 / 4 : pcre (CESA-2005:761)

high Nessus Plugin ID 21854
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 CentOS host is missing one or more security updates.


Updated pcre packages are now available to correct a security issue.

This update has been rated as having moderate security impact by the Red Hat Security Response Team

PCRE is a Perl-compatible regular expression library.

An integer overflow flaw was found in PCRE, triggered by a maliciously crafted regular expression. On systems that accept arbitrary regular expressions from untrusted users, this could be exploited to execute arbitrary code with the privileges of the application using the library. The Common Vulnerabilities and Exposures project assigned the name CVE-2005-2491 to this issue.

The security impact of this issue varies depending on the way that applications make use of PCRE. For example, the Apache web server uses the system PCRE library in order to parse regular expressions, but this flaw would only allow a user who already has the ability to write .htaccess files to gain 'apache' privileges. For applications supplied with Red Hat Enterprise Linux, a maximum security impact of moderate has been assigned.

Users should update to these erratum packages that contain a backported patch to correct this issue.


Update the affected pcre packages.

See Also







Plugin Details

Severity: High

ID: 21854

File Name: centos_RHSA-2005-761.nasl

Version: 1.19

Type: local

Agent: unix

Published: 7/3/2006

Updated: 1/4/2021

Dependencies: ssh_get_info.nasl

Risk Information


Risk Factor: Medium

Score: 5.5


Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

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

Vulnerability Information

CPE: p-cpe:/a:centos:centos:pcre, p-cpe:/a:centos:centos:pcre-devel, cpe:/o:centos:centos:3, cpe:/o:centos:centos:4

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/8/2005

Vulnerability Publication Date: 8/23/2005

Reference Information

CVE: CVE-2005-2491

BID: 14620

RHSA: 2005:761