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CONECTIVA LINUX SECURITY ANNOUNCEMENT
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PACKAGE : exim
SUMMARY : Format string vulnerability in exim
DATE : 2001-06-13 16:27:00
ID : CLA-2001:402
RELEVANT
RELEASES : 6.0

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DESCRIPTION
 "exim" is a popular mail server (MTA) that is included in many
 GNU/Linux distributions.
 Megyer Laszlo reported a format bug vulnerability in the exim package
 that could lead to a compromise if exim is run as root. This software
 is not installed by default on Conectiva Linux 6.0 and, even if
 installed, the default configuration is not vulnerable because it
 does not include the "headers_check_syntax" option in the
 /etc/exim.conf configuration file which is needed to trigger the bug.
 If, however, that option is enabled, and exim is also used to process
 batched SMTP input (via the -bS command-line option), then the
 service becomes vulnerable and a remote attack becomes possible.

SOLUTION
 All exim users are urged to upgrade their packages. Please note that
 this update will restart exim if the daemon is already running.
 
 
 REFERENCES
 http://www.securityfocus.com/bid/2828/

DIRECT DOWNLOAD LINKS TO THE UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/6.0/SRPMS/exim-3.16-4U60_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/exim-3.16-4U60_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/exim-doc-3.16-4U60_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/exim-mon-3.16-4U60_1cl.i386.rpm

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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subscribe: conectiva-updates-subscribepapaleguas.conectiva.com.br
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