RHEL 4 / 5 : pidgin (RHSA-2011:1820)

Medium Nessus Plugin ID 57311


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


Updated pidgin packages that fix multiple security issues are now available for Red Hat Enterprise Linux 4 and 5.

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.

Pidgin is an instant messaging program which can log in to multiple accounts on multiple instant messaging networks simultaneously.

An input sanitization flaw was found in the way the AOL Open System for Communication in Realtime (OSCAR) protocol plug-in in Pidgin, used by the AOL ICQ and AIM instant messaging systems, escaped certain UTF-8 characters. A remote attacker could use this flaw to crash Pidgin via a specially crafted OSCAR message. (CVE-2011-4601)

An input sanitization flaw was found in the way the Pidgin SILC (Secure Internet Live Conferencing) protocol plug-in escaped certain UTF-8 characters in channel messages. A remote attacker could use this flaw to crash Pidgin via a specially crafted SILC message.

Multiple NULL pointer dereference flaws were found in the Jingle extension of the Extensible Messaging and Presence Protocol (XMPP) protocol plug-in in Pidgin. A remote attacker could use these flaws to crash Pidgin via a specially crafted Jingle multimedia message.

Red Hat would like to thank the Pidgin project for reporting these issues. Upstream acknowledges Evgeny Boger as the original reporter of CVE-2011-4601; Diego Bauche Madero from IOActive as the original reporter of CVE-2011-4603; and Thijs Alkemade as the original reporter of CVE-2011-4602.

All Pidgin users should upgrade to these updated packages, which contain backported patches to resolve these issues. Pidgin must be restarted for this update to take effect.


Update the affected packages.

See Also





Plugin Details

Severity: Medium

ID: 57311

File Name: redhat-RHSA-2011-1820.nasl

Version: $Revision: 1.12 $

Type: local

Agent: unix

Published: 2011/12/15

Modified: 2017/01/04

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 5

Temporal Score: 4.1

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

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

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:finch, p-cpe:/a:redhat:enterprise_linux:finch-devel, p-cpe:/a:redhat:enterprise_linux:libpurple, p-cpe:/a:redhat:enterprise_linux:libpurple-devel, p-cpe:/a:redhat:enterprise_linux:libpurple-perl, p-cpe:/a:redhat:enterprise_linux:libpurple-tcl, p-cpe:/a:redhat:enterprise_linux:pidgin, p-cpe:/a:redhat:enterprise_linux:pidgin-devel, p-cpe:/a:redhat:enterprise_linux:pidgin-perl, cpe:/o:redhat:enterprise_linux:4, cpe:/o:redhat:enterprise_linux:5

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2011/12/14

Reference Information

CVE: CVE-2011-4601, CVE-2011-4602, CVE-2011-4603

BID: 51010

OSVDB: 77749, 77750, 77751

RHSA: 2011:1820