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+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
+<glsa id="200410-29">
+ <title>PuTTY: Pre-authentication buffer overflow</title>
+ <synopsis>
+ PuTTY contains a vulnerability allowing an SSH server to execute arbitrary
+ code on the connecting client.
+ </synopsis>
+ <product type="ebuild">putty</product>
+ <announced>2004-10-27</announced>
+ <revised count="02">2006-05-22</revised>
+ <bug>69123</bug>
+ <access>remote</access>
+ <affected>
+ <package name="net-misc/putty" auto="yes" arch="*">
+ <unaffected range="ge">0.56</unaffected>
+ <vulnerable range="le">0.55</vulnerable>
+ </package>
+ </affected>
+ <background>
+ <p>
+ PuTTY is a free implementation of Telnet and SSH for Win32 and Unix
+ platforms, along with an xterm terminal emulator.
+ </p>
+ </background>
+ <description>
+ <p>
+ PuTTY fails to do proper bounds checking on SSH2_MSG_DEBUG packets. The
+ "stringlen" parameter value is incorrectly checked due to signedness
+ issues. Note that this vulnerability is similar to the one described in
+ GLSA 200408-04 but not the same.
+ </p>
+ </description>
+ <impact type="normal">
+ <p>
+ When PuTTY connects to a server using the SSH2 protocol, an attacker
+ may be able to send specially crafted packets to the client, resulting
+ in the execution of arbitrary code with the permissions of the user
+ running PuTTY. Note that this is possible during the authentication
+ process but before host key verification.
+ </p>
+ </impact>
+ <workaround>
+ <p>
+ There is no known workaround at this time.
+ </p>
+ </workaround>
+ <resolution>
+ <p>
+ All PuTTY users should upgrade to the latest version:
+ </p>
+ <code>
+ # emerge --sync
+ # emerge --ask --oneshot --verbose "&gt;=net-misc/putty-0.56"</code>
+ </resolution>
+ <references>
+ <uri link="http://www.idefense.com/application/poi/display?id=155">iDEFENSE Security Advisory 10.27.04</uri>
+ <uri link="https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html">PuTTY ChangeLog</uri>
+ <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-1008">CVE-2004-1008</uri>
+ </references>
+ <metadata tag="requester" timestamp="2004-10-27T15:40:45Z">
+ koon
+ </metadata>
+ <metadata tag="bugReady" timestamp="2004-10-27T15:40:58Z">
+ koon
+ </metadata>
+ <metadata tag="submitter" timestamp="2004-10-27T16:43:51Z">
+ jaervosz
+ </metadata>
+</glsa>