| <?xml version="1.0" encoding="utf-8"?> |
| <?xml-stylesheet href="/xsl/glsa.xsl" type="text/xsl"?> |
| <?xml-stylesheet href="/xsl/guide.xsl" type="text/xsl"?> |
| <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> |
| |
| <glsa id="200408-04"> |
| <title>PuTTY: Pre-authentication arbitrary code execution</title> |
| <synopsis> |
| PuTTY contains a vulnerability allowing a SSH server to execute arbitrary |
| code on the connecting client. |
| </synopsis> |
| <product type="ebuild">PuTTY</product> |
| <announced>August 05, 2004</announced> |
| <revised>May 22, 2006: 03</revised> |
| <bug>59383</bug> |
| <access>remote</access> |
| <affected> |
| <package name="net-misc/putty" auto="yes" arch="*"> |
| <unaffected range="ge">0.55</unaffected> |
| <vulnerable range="le">0.54</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 contains a vulnerability allowing a malicious server to execute |
| arbitrary code on the connecting client before host key verification. |
| </p> |
| </description> |
| <impact type="normal"> |
| <p> |
| When connecting to a server using the SSH2 protocol an attacker is able |
| to execute arbitrary code with the permissions of the user running |
| PuTTY by sending specially crafted packets to the client during the |
| authentication process but before host key verification. |
| </p> |
| </impact> |
| <workaround> |
| <p> |
| There is no known workaround at this time. All users are encouraged to |
| upgrade to the latest available version of PuTTY. |
| </p> |
| </workaround> |
| <resolution> |
| <p> |
| All PuTTY users should upgrade to the latest version: |
| </p> |
| <code> |
| # emerge sync |
| |
| # emerge -pv ">=net-misc/putty-0.55" |
| # emerge ">=net-misc/putty-0.55"</code> |
| </resolution> |
| <references> |
| <uri link="http://www.coresecurity.com/common/showdoc.php?idx=417&idxseccion=10">Corelabs Advisory</uri> |
| <uri link="http://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html">PuTTY ChangeLog</uri> |
| <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-1440">CVE-2004-1440</uri> |
| </references> |
| <metadata tag="requester" timestamp="Wed, 4 Aug 2004 17:20:53 +0000"> |
| koon |
| </metadata> |
| <metadata tag="submitter" timestamp="Thu, 5 Aug 2004 09:03:08 +0000"> |
| jaervosz |
| </metadata> |
| </glsa> |