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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200901-13">
<title>Pidgin: Multiple vulnerabilities</title>
<synopsis>
Multiple vulnerabilities have been discovered in Pidgin, allowing for
remote arbitrary code execution, Denial of Service and service spoofing.
</synopsis>
<product type="ebuild">pidgin</product>
<announced>January 20, 2009</announced>
<revised>January 20, 2009: 01</revised>
<bug>230045</bug>
<bug>234135</bug>
<access>remote</access>
<affected>
<package name="net-im/pidgin" auto="yes" arch="*">
<unaffected range="ge">2.5.1</unaffected>
<vulnerable range="lt">2.5.1</vulnerable>
</package>
</affected>
<background>
<p>
Pidgin (formerly Gaim) is an instant messaging client for a variety of
instant messaging protocols. It is based on the libpurple instant
messaging library.
</p>
</background>
<description>
<p>
Multiple vulnerabilities have been discovered in Pidgin and the
libpurple library:
</p>
<ul><li>
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).
</li>
<li>
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).
</li>
<li>
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).
</li>
<li>
Josh Triplett discovered that the NSS plugin for libpurple does not
properly verify SSL certificates (CVE-2008-3532).
</li>
</ul>
</description>
<impact type="normal">
<p>
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.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All Pidgin users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=net-im/pidgin-2.5.1&quot;</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2927">CVE-2008-2927</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2955">CVE-2008-2955</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2957">CVE-2008-2957</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3532">CVE-2008-3532</uri>
</references>
<metadata tag="requester" timestamp="Sun, 06 Jul 2008 18:20:14 +0000">
p-y
</metadata>
<metadata tag="submitter" timestamp="Sat, 29 Nov 2008 14:01:14 +0000">
a3li
</metadata>
<metadata tag="bugReady" timestamp="Tue, 02 Dec 2008 14:32:53 +0000">
rbu
</metadata>
</glsa>