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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2002.123 -- Debian Security Advisory DSA 119-1 ssh channel bug 11 March 2002 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: OpenSSH versions 2.0 through 3.0.2 Vendor: Debian Operating System: Debian unstable and testing archives Linux UNIX Impact: Root Compromise Execute Arbitrary Code/Commands Access Required: Remote Ref: ESB-2002.117 ESB-2002.118 ESB-2002.121 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----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 <joost@pine.nl> 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----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to use any or all of this information is the responsibility of each user or organisation, and should be done so in accordance with site policies and procedures. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the original authors to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/Information/advisories.html If you believe that your system has been compromised, contact AusCERT or your representative in FIRST (Forum of Incident Response and Security Teams). Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for emergencies. -----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: noconv Comment: ftp://ftp.auscert.org.au/pub/auscert/AUSCERT_PGP.key iQCVAwUBPIzXECh9+71yA2DNAQHkNQQAlW61kd/saWQ5j6REdIXWzJwegeK2XFh8 jP3xTQomvTl+iTmaiGfacgT5hpyuIXlVQEBfh+Jm7HTOLUPdCTFmx3+pMD3UW9mT 1v2IEODdvfqB70Z7392AhxWuxJtibT1ilDRDmC/KadSDltz4Nn0zD+6XMn5/ZxRP iSBcYMVZKtI= =dgVu -----END PGP SIGNATURE-----