RHEL 6 : libproxy (RHSA-2012:1461)

Critical Nessus Plugin ID 62922


The remote Red Hat host is missing one or more security updates.


Updated libproxy packages that fix one security issue are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

libproxy is a library that handles all the details of proxy configuration.

A buffer overflow flaw was found in the way libproxy handled the downloading of proxy auto-configuration (PAC) files. A malicious server hosting a PAC file or a man-in-the-middle attacker could use this flaw to cause an application using libproxy to crash or, possibly, execute arbitrary code, if the proxy settings obtained by libproxy (from the environment or the desktop environment settings) instructed the use of a PAC proxy configuration. (CVE-2012-4505)

This issue was discovered by the Red Hat Security Response Team.

Users of libproxy should upgrade to these updated packages, which contain a backported patch to correct this issue. All applications using libproxy must be restarted for this update to take effect.


Update the affected packages.

See Also



Plugin Details

Severity: Critical

ID: 62922

File Name: redhat-RHSA-2012-1461.nasl

Version: $Revision: 1.10 $

Type: local

Agent: unix

Published: 2012/11/15

Modified: 2017/01/05

Dependencies: 12634

Risk Information

Risk Factor: Critical


Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:libproxy, p-cpe:/a:redhat:enterprise_linux:libproxy-bin, p-cpe:/a:redhat:enterprise_linux:libproxy-debuginfo, p-cpe:/a:redhat:enterprise_linux:libproxy-devel, p-cpe:/a:redhat:enterprise_linux:libproxy-gnome, p-cpe:/a:redhat:enterprise_linux:libproxy-kde, p-cpe:/a:redhat:enterprise_linux:libproxy-mozjs, p-cpe:/a:redhat:enterprise_linux:libproxy-python, p-cpe:/a:redhat:enterprise_linux:libproxy-webkit, cpe:/o:redhat:enterprise_linux:6, cpe:/o:redhat:enterprise_linux:6.3

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

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2012/11/14

Reference Information

CVE: CVE-2012-4505

BID: 55910

OSVDB: 86567

RHSA: 2012:1461