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Conectiva Linux Advisory: sendmail

Mar 04, 2003, 01:57 (1 Talkback[s])

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CONECTIVA LINUX SECURITY ANNOUNCEMENT 
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PACKAGE   : sendmail
SUMMARY   : Remote vulnerability
DATE      : 2003-03-03 19:30:00
ID        : CLA-2003:571
RELEVANT
RELEASES  : 6.0, 7.0, 8

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DESCRIPTION
 Sendmail[1] is a widely used Mail Transfer Agent (MTA).
 
 Researchers at ISS[2] discovered and published[3] a remote
 vulnerability[4][5] in sendmail that could be used by an attacker to
 execute arbitrary code as root.
 
 This vulnerability can be exploited by creating and sending to a
 vulnerable sendmail server a carefully crafted email message. This
 message will trigger the vulnerability and arbitrary commands can be
 executed with administrative privileges.
 
 Please note that non-vulnerable mail servers can be used to pass such
 messages along so that, for example, even internal sendmail servers
 could be reached.
 
 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.
 
 As with many other services, the email service, even if installed, is
 not started by default in Conectiva Linux.
 
 The Common Vulnerabilities and Exposures (CVE) project has assigned
 the name CAN-2002-1337[7] to this issue.


SOLUTION
 All sendmail users should upgrade their packages immediately. After
 the upgrade, the sendmail service will be automatically restarted if
 it was already running.
 
 
 REFERENCES
 1.http://www.sendmail.org/
 2.http://www.iss.net/
 3.http://www.iss.net/issEn/delivery/xforce/alertdetail.jsp?oid=21950
 4.http://www.cert.org/advisories/CA-2003-07.html
 5.http://www.kb.cert.org/vuls/id/398025
 6.http://www.sendmail.com/security/
 7.http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-1337


UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/6.0/SRPMS/sendmail-8.11.6-1U60_3cl.src.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/sendmail-8.11.6-1U60_3cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/sendmail-cf-8.11.6-1U60_3cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/sendmail-doc-8.11.6-1U60_3cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/SRPMS/sendmail-8.11.6-1U70_3cl.src.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/sendmail-8.11.6-1U70_3cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/sendmail-cf-8.11.6-1U70_3cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/sendmail-doc-8.11.6-1U70_3cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/SRPMS/sendmail-8.11.6-2U80_3cl.src.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/sendmail-8.11.6-2U80_3cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/sendmail-cf-8.11.6-2U80_3cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/sendmail-doc-8.11.6-2U80_3cl.i386.rpm


ADDITIONAL INSTRUCTIONS
 Users of Conectiva Linux version 6.0 or higher may use apt to perform 
 upgrades of RPM packages:

 - 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