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From: secure@conectiva.com.br To: conectiva-updates@papaleguas.conectiva.com.br, linuxlist@securityportal.com, lwn@lwn.net, bugtraq@securityfocus.com, security-alert@linuxsecurity.com Subject: [CLA-2001:402] Conectiva Linux Security Announcement - exim Date: Wed, 13 Jun 2001 16:28:16 -0300 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - -------------------------------------------------------------------------- CONECTIVA LINUX SECURITY ANNOUNCEMENT - -------------------------------------------------------------------------- PACKAGE : exim SUMMARY : Format string vulnerability in exim DATE : 2001-06-13 16:27:00 ID : CLA-2001:402 RELEVANT RELEASES : 6.0 - ------------------------------------------------------------------------- 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 - ------------------------------------------------------------------------- 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 - ------------------------------------------------------------------------- All our advisories and generic update instructions can be viewed at http://distro.conectiva.com.br/atualizacoes/?idioma=en - ------------------------------------------------------------------------- subscribe: conectiva-updates-subscribe@papaleguas.conectiva.com.br unsubscribe: conectiva-updates-unsubscribe@papaleguas.conectiva.com.br -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.4 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQE7J77P42jd0JmAcZARAgfwAJ9gv11hSHXQ8NaO1GaRSffyE1kFAgCgxQcC ndH70icT/qohz/W3nqWn2SA= =0iK0 -----END PGP SIGNATURE-----