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Red Hat: RHSA-2010:0890-01 Moderate: Pidgin DoS Attack Threat

red hat
Calendar Grey November 16, 2010
Dist Redhat Esm H88
Explore the latest Red Hat guidance regarding pidgin's intermediate security patch that tackles several vulnerabilities affecting RHEL 6 users.
Updated pidgin packages that fix multiple security issues are now available for Red Hat Enterprise Linux 6

Solution

Before applying this update, make sure all previously-released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at

Summary

Pidgin is an instant messaging program which can log in to multiple accounts on multiple instant messaging networks simultaneously.
Multiple NULL pointer dereference flaws were found in the way Pidgin handled Base64 decoding. A remote attacker could use these flaws to crash Pidgin if the target Pidgin user was using the Yahoo! Messenger Protocol, MSN, MySpace, or Extensible Messaging and Presence Protocol (XMPP) protocol plug-ins, or using the Microsoft NT LAN Manager (NTLM) protocol for authentication. (CVE-2010-3711)
Red Hat would like to thank the Pidgin project for reporting these issues. Upstream acknowledges Daniel Atallah as the original reporter.
All Pidgin users should upgrade to these updated packages, which contain a backported patch to resolve these issues. Pidgin must be restarted for this update to take effect.

Topics%20covered

Topics Covered

security advisory moderate security update Red Hat DoS pidgin base64 crash

References

https://access.redhat.com/security/cve/CVE-2010-3711 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source:
i386: libpurple-2.6.6-6.el6_0.i686.rpm pidgin-2.6.6-6.el6_0.i686.rpm pidgin-debuginfo-2.6.6-6.el6_0.i686.rpm
x86_64: libpurple-2.6.6-6.el6_0.i686.rpm libpurple-2.6.6-6.el6_0.x86_64.rpm pidgin-2.6.6-6.el6_0.x86_64.rpm pidgin-debuginfo-2.6.6-6.el6_0.i686.rpm pidgin-debuginfo-2.6.6-6.el6_0.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
Source:
i386: finch-2.6.6-6.el6_0.i686.rpm finch-devel-2.6.6-6.el6_0.i686.rpm libpurple-devel-2.6.6-6.el6_0.i686.rpm libpurple-perl-2.6.6-6.el6_0.i686.rpm libpurple-tcl-2.6.6-6.el6_0.i686.rpm pidgin-debuginfo-2.6.6-6.el6_0.i686.rpm pidgin-devel-2.6.6-6.el6_0.i686.rpm pidgin-docs-2.6.6-6.el6_0.i686.rpm pidgin-perl-2.6.6-6.el6_0.i686.rpm
x86_64: finch-2.6.6-6.el6_0.i686.rpm finch-2.6.6-6.el6_0.x86_64.rpm finch-devel-2.6.6-6.el6_0.i686.rpm finch-devel-2.6.6-6.el6_0.x86_64.rpm libpurple-devel-2.6.6-6.el6_0.i686.rpm libpurple-devel-2.6.6-6.el6_0.x86_64.rpm libpurple-perl-2.6.6-6.el6_0.x86_64.rpm libpurple-tcl-2.6.6-6.el6_0.x86_64.rpm pidgin-debuginfo-2.6.6-6.el6_0.i686.rpm pidgin-debuginfo-2.6.6-6.el6_0.x86_64.rpm pidgin-devel-2.6.6-6.el6_0.i686.rpm pidgin-devel-2.6.6-6.el6_0.x86_64.rpm pidgin-docs-2.6.6-6.el6_0.x86_64.rpm pidgin-perl-2.6.6-6.el6_0.x86_64.rpm


Read the Full Advisory


Advisory ID: RHSA-2010:0890-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2010:0890.html
Issue date: 2010-11-16

Topic

Updated pidgin packages that fix multiple security issues are now availablefor Red Hat Enterprise Linux 6.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available from the CVE link inthe References section.

Topics%20covered

Topics Covered

security advisory moderate security update Red Hat DoS pidgin base64 crash

Relevant Releases Architectures

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64

Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64

Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

Bugs Fixed

641921 - CVE-2010-3711 Pidgin (libpurple): Multiple DoS (crash) flaws by processing of unsanitized Base64 decoder values

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