| <?xml version="1.0" encoding="utf-8"?> |
| <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> |
| |
| <glsa id="200502-28"> |
| <title>PuTTY: Remote code execution</title> |
| <synopsis> |
| PuTTY was found to contain vulnerabilities that can allow a malicious SFTP |
| server to execute arbitrary code on unsuspecting PSCP and PSFTP clients. |
| </synopsis> |
| <product type="ebuild">Putty</product> |
| <announced>February 21, 2005</announced> |
| <revised>February 21, 2005: 01</revised> |
| <bug>82753</bug> |
| <access>remote</access> |
| <affected> |
| <package name="net-misc/putty" auto="yes" arch="*"> |
| <unaffected range="ge">0.57</unaffected> |
| <vulnerable range="lt">0.57</vulnerable> |
| </package> |
| </affected> |
| <background> |
| <p> |
| PuTTY is a popular SSH client, PSCP is a secure copy |
| implementation, and PSFTP is a SSH File Transfer Protocol client. |
| </p> |
| </background> |
| <description> |
| <p> |
| Two vulnerabilities have been discovered in the PSCP and PSFTP |
| clients, which can be triggered by the SFTP server itself. These issues |
| are caused by the improper handling of the FXP_READDIR response, along |
| with other string fields. |
| </p> |
| </description> |
| <impact type="normal"> |
| <p> |
| An attacker can setup a malicious SFTP server that would send |
| these malformed responses to a client, potentially allowing the |
| execution of arbitrary code on their system. |
| </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 ">=net-misc/putty-0.57"</code> |
| </resolution> |
| <references> |
| <uri link="http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-sftp-readdir.html">PuTTY vulnerability vuln-sftp-readdir</uri> |
| <uri link="http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-sftp-string.html">PuTTY vulnerability vuln-sftp-string</uri> |
| <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0467">CAN-2005-0467</uri> |
| <uri link="http://www.idefense.com/application/poi/display?id=201&type=vulnerabilities">iDEFENSE Advisory</uri> |
| </references> |
| <metadata tag="requester" timestamp="Mon, 21 Feb 2005 09:51:17 +0000"> |
| vorlon078 |
| </metadata> |
| <metadata tag="bugReady" timestamp="Mon, 21 Feb 2005 09:52:44 +0000"> |
| vorlon078 |
| </metadata> |
| <metadata tag="submitter" timestamp="Mon, 21 Feb 2005 13:42:55 +0000"> |
| lewk |
| </metadata> |
| </glsa> |