Hmmm..not a exploit, but a vulnerability in OpenSSH up to 3.0.2 (3.1 has been released), there is an advisory that has been posted on Bugtraq and /. Thought the part about exploitation without a user account may be possible was interesting. quoted and referenced: http://www.pine.nl/advisories/pine-cert-20020301.txt -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - ----------------------------------------------------------------------------- Pine Internet Security Advisory - ----------------------------------------------------------------------------- Advisory ID : PINE-CERT-20020301 Authors : Joost Pol <joostat_private> Issue date : 2002-03-07 Application : OpenSSH Version(s) : All versions between 2.0 and 3.0.2 Platforms : multiple Vendor informed : 20020304 Availability : http://www.pine.nl/advisories/pine-cert-20020301.txt - ----------------------------------------------------------------------------- Synopsis A bug exists in the channel code of OpenSSH versions 2.0 - 3.0.2 Users with an existing user account can abuse this bug to gain root privileges. Exploitability without an existing user account has not been proven but is not considered impossible. A malicious ssh server could also use this bug to exploit a connecting vulnerable client. Impact HIGH: Existing users will gain root privileges. Description Simple off by one error. Patch included. Solution The OpenSSH project will shortly release version 3.1. Upgrading to this version is highly recommended. This version will be made available at http://www.openssh.com The FreeBSD port of OpenSSH has been updated to reflect the patches as supplied in this document. OpenSSH CVS has been updated, see http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/ \ channels.c.diff?r1=1.170&r2=1.171 Or apply the attached patch as provided by PINE Internet: http://www.pine.nl/advisories/pine-cert-20020301.patch -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (FreeBSD) Comment: For info see http://www.gnupg.org iEYEARECAAYFAjyHaKkACgkQDNrSylhGGb3p2ACfXZu3WShzGT4Mp/LgwA6AZStu rtkAn3O83WzyNijdJ9+9OwLJxUcVj4Ld =j+Hz -----END PGP SIGNATURE----- -- Dan Hanson SecurityFocus -- http://www.securityfocus.com ARIS -- http://aris.securityfocus.com dhansonat_private
This archive was generated by hypermail 2b30 : Fri Mar 08 2002 - 02:39:02 PST