Bugtraq: [CLA-2002:467] Conectiva Linux Security Announcement

From: <secure_at_conectiva.com.br>
Date: Thu, 7 Mar 2002 17:45:35 -0300

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CONECTIVA LINUX SECURITY ANNOUNCEMENT
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PACKAGE : openssh
SUMMARY : OpenSSH vulnerability
DATE : 2002-03-07 17:44:00
ID : CLA-2002:467
RELEVANT
RELEASES : 5.0, prg graficos, ecommerce, 5.1, 6.0, 7.0

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DESCRIPTION
OpenSSH is a very popular and versatile tool that uses encrypted
connections between hosts and is commonly used for remote
administration.

Joost Pol <joost_at_pine.nl> discovered[1] a off-by-one bug in OpenSSH's
channel code that could be used by an attacker with a local account
on the victim's machine to obtain root privileges on that machine.
Another scenario for this vulnerability is that of a malicious ssh
server exploiting a vulnerable ssh client connecting to it.

SOLUTION
It is recommended that all OpenSSH users upgrade their packages. The
sshd service will be automatically restarted after the upgrade if it
was already running at that time.

REFERENCES
1. http://www.pine.nl/advisories/pine-cert-20020301.txt
2. http://www.openbsd.org/advisories/ssh_channelalloc.txt (OpenSSH
advisory)

ADDITIONAL INSTRUCTIONS
Users of Conectiva Linux version 6.0 or higher may use apt to perform
upgrades of RPM packages:
- add the following line to /etc/apt/sources.list if it is not there yet
(you may also use linuxconf to do this):

rpm [cncbr] ftp://atualizacoes.conectiva.com.br 6.0/conectiva updates

(replace 6.0 with the correct version number if you are not running CL6.0)

- run: apt-get update
- after that, execute: apt-get upgrade

Detailed instructions reagarding the use of apt and upgrade examples
can be found at http://distro.conectiva.com.br/atualizacoes/#apt?idioma=en

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All packages are signed with Conectiva's GPG key. The key and instructions
on how to import it can be found at
http://distro.conectiva.com.br/seguranca/chave/?idioma=en
Instructions on how to check the signatures of the RPM packages can be
found at http://distro.conectiva.com.br/seguranca/politica/?idioma=en
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All our advisories and generic update instructions can be viewed at
http://distro.conectiva.com.br/atualizacoes/?idioma=en

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Received on Mar 08 2002

[CLA-2002:467] Conectiva Linux Security Announcement - openssh