Date: Fri, 11 Mar 2016 22:50:09 +0000 (UTC) From: Bryan Drewery <bdrewery@FreeBSD.org> To: ports-committers@freebsd.org, svn-ports-all@freebsd.org, svn-ports-head@freebsd.org Subject: svn commit: r410845 - head/security/vuxml Message-ID: <201603112250.u2BMo9Td092394@repo.freebsd.org>
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Author: bdrewery Date: Fri Mar 11 22:50:09 2016 New Revision: 410845 URL: https://svnweb.freebsd.org/changeset/ports/410845 Log: Document OpenSSH 7.2p2 fix for X11Forwarding command injection Modified: head/security/vuxml/vuln.xml Modified: head/security/vuxml/vuln.xml ============================================================================== --- head/security/vuxml/vuln.xml Fri Mar 11 22:49:26 2016 (r410844) +++ head/security/vuxml/vuln.xml Fri Mar 11 22:50:09 2016 (r410845) @@ -58,6 +58,47 @@ Notes: * Do not forget port variants (linux-f10-libxml2, libxml2, etc.) --> <vuxml xmlns="http://www.vuxml.org/apps/vuxml-1">; + <vuln vid="e4644df8-e7da-11e5-829d-c80aa9043978"> + <topic>openssh -- command injection when X11Forwarding is enabled</topic> + <affects> + <package> + <name>openssh-portable</name> + <range><lt>7.2.p2,1</lt></range> + </package> + </affects> + <description> + <body xmlns="http://www.w3.org/1999/xhtml">; + <p>The OpenSSH project reports:</p> + <blockquote cite="http://www.openssh.com/txt/x11fwd.adv">; + <p>Missing sanitisation of untrusted input allows an + authenticated user who is able to request X11 forwarding + to inject commands to xauth(1). + </p> + <p>Injection of xauth commands grants the ability to read + arbitrary files under the authenticated user's privilege, + Other xauth commands allow limited information leakage, + file overwrite, port probing and generally expose xauth(1), + which was not written with a hostile user in mind, as an + attack surface. + </p> + <p>Mitigation:</p> + <p>Set X11Forwarding=no in sshd_config. This is the default.</p> + <p>For authorized_keys that specify a "command" restriction, + also set the "restrict" (available in OpenSSH >=7.2) or + "no-x11-forwarding" restrictions. + </p> + </blockquote> + </body> + </description> + <references> + <url>http://www.openssh.com/txt/x11fwd.adv</url>; + </references> + <dates> + <discovery>2016-03-11</discovery> + <entry>2016-03-11</entry> + </dates> + </vuln> + <vuln vid="70c44cd0-e717-11e5-85be-14dae9d210b8"> <topic>quagga -- stack based buffer overflow vulnerability</topic> <affects>
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