[CLA-2003:614] Conectiva Security Announcement - sendmail

From: Conectiva Updates (secure@conectiva.com.br)
Date: 04/04/03

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    Date: Fri, 4 Apr 2003 15:12:28 -0300
To: conectiva-updates@papaleguas.conectiva.com.br, lwn@lwn.net, bugtraq@securityfocus.com, security-alerts@linuxsecurity.com, linsec@lists.seifried.org
From: Conectiva Updates <secure@conectiva.com.br>

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    CONECTIVA LINUX SECURITY ANNOUNCEMENT
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    PACKAGE : sendmail
    SUMMARY : Buffer overflow vulnerability
    DATE : 2003-04-04 15:10:00
    ID : CLA-2003:614
    RELEVANT
    RELEASES : 6.0, 7.0, 8

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    DESCRIPTION
     Sendmail[1] is a widely used Mail Transfer Agent (MTA).
     
     Michal Zalewski reported[6] a remote vulnerability[5] in sendmail
     versions 8.12.8 and below. The vulnerability lies in the address
     parser which performs insufficient bounds checking in certain
     conditions due to a char to int conversion.
     
     It is believed to be possible for remote attackers to cause a Denial
     of Service condition and to even execute arbitrary commands with the
     same permissions under which the sendmail daemon runs, which is
     root.
     
     The sendmail authors have released a new version[2], 8.12.9, which
     fixes this vulnerability. They have also made available patches[3]
     for older versions, which the packages provided via this announcement
     contain.
     
     Starting with Conectiva Linux 7.0, sendmail is no longer the default
     mail server and has been replaced with Postfix. But sendmail is still
     shipped in all Conectiva Linux versions.

    SOLUTION
     All sendmail users should upgrade immediately. If the service is
     already active, it should be restarted after the upgrade in order to
     close the vulnerability. To do so, execute the following command as
     root:
     
     /sbin/service sendmail restart
     
     
     REFERENCES
     1. http://www.sendmail.org/
     2. http://www.sendmail.org/8.12.9.html
     3. http://www.sendmail.org/patchps.html
     4. http://www.cert.org/advisories/CA-2003-12.html
     5. http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0161
     6. http://marc.theaimsgroup.com/?l=bugtraq&m=104897487512238&w=2

    UPDATED PACKAGES
    ftp://atualizacoes.conectiva.com.br/6.0/SRPMS/sendmail-8.11.6-1U60_4cl.src.rpm
    ftp://atualizacoes.conectiva.com.br/6.0/RPMS/sendmail-8.11.6-1U60_4cl.i386.rpm
    ftp://atualizacoes.conectiva.com.br/6.0/RPMS/sendmail-cf-8.11.6-1U60_4cl.i386.rpm
    ftp://atualizacoes.conectiva.com.br/6.0/RPMS/sendmail-doc-8.11.6-1U60_4cl.i386.rpm
    ftp://atualizacoes.conectiva.com.br/7.0/SRPMS/sendmail-8.11.6-1U70_4cl.src.rpm
    ftp://atualizacoes.conectiva.com.br/7.0/RPMS/sendmail-8.11.6-1U70_4cl.i386.rpm
    ftp://atualizacoes.conectiva.com.br/7.0/RPMS/sendmail-cf-8.11.6-1U70_4cl.i386.rpm
    ftp://atualizacoes.conectiva.com.br/7.0/RPMS/sendmail-doc-8.11.6-1U70_4cl.i386.rpm
    ftp://atualizacoes.conectiva.com.br/8/SRPMS/sendmail-8.11.6-2U80_4cl.src.rpm
    ftp://atualizacoes.conectiva.com.br/8/RPMS/sendmail-8.11.6-2U80_4cl.i386.rpm
    ftp://atualizacoes.conectiva.com.br/8/RPMS/sendmail-cf-8.11.6-2U80_4cl.i386.rpm
    ftp://atualizacoes.conectiva.com.br/8/RPMS/sendmail-doc-8.11.6-2U80_4cl.i386.rpm

    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 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

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    All our advisories and generic update instructions can be viewed at
    http://distro.conectiva.com.br/atualizacoes/?idioma=en

    - -------------------------------------------------------------------------
    Copyright 2003 (c) Conectiva Inc.
    http://www.conectiva.com

    - -------------------------------------------------------------------------
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