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Red Hat: RHSA-2010-0788-01 Moderate: Pidgin DoS Vulnerability

red hat
Calendar Grey October 21, 2010
Dist Redhat Esm H88
Recent pidgin security patch for Red Hat addresses multiple vulnerabilities. Urgent system updates are recommended for optimal defense.
Updated pidgin packages that fix multiple security issues are now available for Red Hat Enterprise Linux 4 and 5

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)
A NULL pointer dereference flaw was found in the way the Pidgin MSN protocol plug-in processed custom emoticon messages. A remote attacker could use this flaw to crash Pidgin by sending specially-crafted emoticon messages during mutual communication. (CVE-2010-1624)
Red Hat would like to thank the Pidgin project for reporting these issues. Upstream acknowledges Daniel Atallah as the original reporter of CVE-2010-3711, and Pierre Noguès of Meta Security as the original reporter of CVE-2010-1624.
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.

Topics%20covered

Topics Covered

security advisory moderate security update Red Hat DoS attack vector pidgin

References

https://access.redhat.com/security/cve/CVE-2010-1624 https://access.redhat.com/security/cve/CVE-2010-3711 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux AS version 4:
Source:
i386: finch-2.6.6-5.el4_8.i386.rpm finch-devel-2.6.6-5.el4_8.i386.rpm libpurple-2.6.6-5.el4_8.i386.rpm libpurple-devel-2.6.6-5.el4_8.i386.rpm libpurple-perl-2.6.6-5.el4_8.i386.rpm libpurple-tcl-2.6.6-5.el4_8.i386.rpm pidgin-2.6.6-5.el4_8.i386.rpm pidgin-debuginfo-2.6.6-5.el4_8.i386.rpm pidgin-devel-2.6.6-5.el4_8.i386.rpm pidgin-perl-2.6.6-5.el4_8.i386.rpm
ia64: finch-2.6.6-5.el4_8.ia64.rpm finch-devel-2.6.6-5.el4_8.ia64.rpm libpurple-2.6.6-5.el4_8.ia64.rpm libpurple-devel-2.6.6-5.el4_8.ia64.rpm libpurple-perl-2.6.6-5.el4_8.ia64.rpm libpurple-tcl-2.6.6-5.el4_8.ia64.rpm pidgin-2.6.6-5.el4_8.ia64.rpm pidgin-debuginfo-2.6.6-5.el4_8.ia64.rpm pidgin-devel-2.6.6-5.el4_8.ia64.rpm pidgin-perl-2.6.6-5.el4_8.ia64.rpm
ppc: finch-2.6.6-5.el4_8.ppc.rpm finch-devel-2.6.6-5.el4_8.ppc.rpm libpurple-2.6.6-5.el4_8.ppc.rpm libpurple-devel-2.6.6-5.el4_8.ppc.rpm libpurple-perl-2.6.6-5.el4_8.ppc.rpm libpurple-tcl-2.6.6-5.el4_8.ppc.rpm pidgin-2.6.6-5.el4_8.ppc.rpm pidgin-debuginfo-2.6.6-5.el4_8.ppc.rpm pidgin-devel-2.6.6-5.el4_8.ppc.rpm pidgin-perl-2.6.6-5.el4_8.ppc.rpm
x86_64: finch-2.6.6-5.el4_8.x86_64.rpm finch-devel-2.6.6-5.el4_8.x86_64.rpm libpurple-2.6.6-5.el4_8.x86_64.rpm libpurple-devel-2.6.6-5.el4_8.x86_64.rpm

Read the Full Advisory


Advisory ID: RHSA-2010:0788-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2010:0788.html
Issue date: 2010-10-21

Topic

Updated pidgin packages that fix multiple security issues are now availablefor Red Hat Enterprise Linux 4 and 5.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. Common Vulnerability Scoring System (CVSS) base scores,which give detailed severity ratings, are available for each vulnerabilityfrom the CVE links in the References section.

Topics%20covered

Topics Covered

security advisory moderate security update Red Hat DoS attack vector pidgin

Relevant Releases Architectures

RHEL Desktop Workstation (v. 5 client) - i386, x86_64

RHEL Optional Productivity Applications (v. 5 server) - i386, x86_64

Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, x86_64

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64

Red Hat Enterprise Linux Desktop version 4 - i386, x86_64

Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64

Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64

Bugs Fixed

589973 - CVE-2010-1624 Pidgin: MSN SLP emoticon DoS (NULL pointer dereference)

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

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