Articles / Debian: ssh channel bug

Debian: ssh channel bug

Joost Pol reports that OpenSSH versions 2.0 through 3.0.2 have an off-by-one bug in the channel allocation code. This vulnerability can be exploited by authenticated users to gain root privilege or by a malicious server exploiting a client with this bug. Since Debian 2.2 (potato) shipped with OpenSSH (the "ssh" package) version 1.2.3, it is not vulnerable to this exploit. No fix is required for Debian 2.2 (potato).
-----BEGIN PGP SIGNED MESSAGE-----

- ----------------------------------------------------------------------------
Debian Security Advisory                                 security@debian.org
http://www.debian.org/security/                                Michael Stone
March 7, 2002
- ----------------------------------------------------------------------------

Package: openssh
Vulnerability: local root exploit, remote client exploit
Debian-specific: no

Joost Pol  reports that OpenSSH versions 2.0 through 3.0.2
have an off-by-one bug in the channel allocation code. This vulnerability
can be exploited by authenticated users to gain root privilege or by a
malicious server exploiting a client with this bug.

Since Debian 2.2 (potato) shipped with OpenSSH (the "ssh" package)
version 1.2.3, it is not vulnerable to this exploit. No fix is required
for Debian 2.2 (potato).

The Debian unstable and testing archives do include a more recent OpenSSH
(ssh) package. If you are running these pre-release distributions you
should ensure that you are running version 3.0.2p1-8, a patched version
which was added to the unstable archive today, or a later version.

- ----------------------------------------------------------------------------
For apt-get: deb http://security.debian.org/ stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: debian-security-announce@lists.debian.org

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.0.6 (GNU/Linux)
Comment: For info see http://www.gnupg.org

iQCVAwUBPIkgYw0hVr09l8FJAQE3bwQApAYLyouyfSxma4sxnqk74xb/jVd324/U
demNb7wTp6fVkLUYKC6d0HTFYtFhlnTh9qHpmQRG0nUE9FgdoB0NVgBjpBEXAxU8
8wkX84dfAYLCZBBF6R01XozJFb+rWVoSAGUunMgtnEWXnAa8ZNkwstVX4X38HoVf
BHkicmvH6Fg=
=vFPj
-----END PGP SIGNATURE-----
Screenshot

Project Spotlight

Kigo Video Converter Ultimate for Mac

A tool for converting and editing videos.

Screenshot

Project Spotlight

Kid3

An efficient tagger for MP3, Ogg/Vorbis, and FLAC files.