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[Full-disclosure] [ GLSA 200901-13 ] Pidgin: Multiple vulnerabilities
From: Pierre-Yves Rofes <py_at_nospam>Date: Tue Jan 20 2009 - 22:01:50 GMT
To: gentoo-announce@gentoo.org
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Synopsis
Multiple vulnerabilities have been discovered in Pidgin, allowing for remote arbitrary code execution, Denial of Service and service spoofing.
Background
Pidgin (formerly Gaim) is an instant messaging client for a variety of instant messaging protocols. It is based on the libpurple instant messaging library.
Affected packages
Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-im/pidgin < 2.5.1 >= 2.5.1
Description
Multiple vulnerabilities have been discovered in Pidgin and the libpurple library:
- A participant to the TippingPoint ZDI reported multiple integer overflows in the msn_slplink_process_msg() function in the MSN protocol implementation (CVE-2008-2927).
- Juan Pablo Lopez Yacubian is credited for reporting a use-after-free flaw in msn_slplink_process_msg() in the MSN protocol implementation (CVE-2008-2955).
- The included UPnP server does not limit the size of data to be downloaded for UPnP service discovery, according to a report by Andrew Hunt and Christian Grothoff (CVE-2008-2957).
- Josh Triplett discovered that the NSS plugin for libpurple does not properly verify SSL certificates (CVE-2008-3532).
Impact
A remote attacker could send specially crafted messages or files using the MSN protocol which could result in the execution of arbitrary code or crash Pidgin. NOTE: Successful exploitation might require the victim's interaction. Furthermore, an attacker could conduct man-in-the-middle attacks to obtain sensitive information using bad certificates and cause memory and disk resources to exhaust.
Workaround
There is no known workaround at this time.
Resolution
All Pidgin users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-im/pidgin-2.5.1"
References
[ 1 ] CVE-2008-2927
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2927
[ 2 ] CVE-2008-2955
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2955
[ 3 ] CVE-2008-2957
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2957
[ 4 ] CVE-2008-3532
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3532
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200901-13.xml
Concerns?
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at http://bugs.gentoo.org.
License
Copyright 2009 Gentoo Foundation, Inc; referenced text belongs to its owner(s).
The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.5
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