[CLA-2004:889] Conectiva Security Announcement - sasl2

From: Conectiva Updates (secure_at_conectiva.com.br)
Date: 11/11/04

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Date: Thu, 11 Nov 2004 15:17:12 -0200
To: conectiva-updates@papaleguas.conectiva.com.br, lwn@lwn.net, bugtraq@securityfocus.com, security-alerts@linuxsecurity.com, linsec@lists.seifried.org

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CONECTIVA LINUX SECURITY ANNOUNCEMENT
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PACKAGE : sasl2
SUMMARY : Fix for buffer overflow vulnerability
DATE : 2004-11-11 15:16:00
ID : CLA-2004:889
RELEVANT
RELEASES : 9, 10

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DESCRIPTION
SASL[1] is the Simple Authentication and Security Layer, a method for
adding authentication support to connection-based protocols.

A vulnerability[2] has been discovered in the Cyrus implementation of
the SASL library. The library honors the environment variable
SASL_PATH blindly, which allows a local attacker to link against a
malicious library to run arbitrary code with the privileges of a
setuid or setgid application.

SOLUTION
It is recommended that all sasl2 users upgrade their packages.

IMPORTANT: If you are using Conectiva Linux 9, it is important to
restart saslauthd daemon after upgrading the packages, in order to
really fix the vulnerability.

REFERENCES
1.http://asg.web.cmu.edu/sasl/
2.http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0884

ADDITIONAL INSTRUCTIONS
The apt tool can be used to perform RPM packages upgrades:

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

Detailed instructions regarding 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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Copyright (c) 2004 Conectiva Inc.
http://www.conectiva.com

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