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CVE-2009-2939

Published: 21 September 2009

The postfix.postinst script in the Debian GNU/Linux and Ubuntu postfix 2.5.5 package grants the postfix user write access to /var/spool/postfix/pid, which might allow local users to conduct symlink attacks that overwrite arbitrary files.

Notes

AuthorNote
jdstrand
per Weitse, the symlink attack should not be possible due to
defensive programming. A subverted postfix process running as 'postfix'
could replace the pid file, which master could then send signals to.

Priority

Negligible

Status

Package Release Status
postfix
Launchpad, Ubuntu, Debian
dapper
Released (2.2.10-1ubuntu0.3)
hardy
Released (2.5.1-2ubuntu1.3)
intrepid Ignored
(end of life, was needed)
jaunty Ignored
(end of life)
karmic
Released (2.6.5-3)
lucid
Released (2.6.5-3)
maverick
Released (2.6.5-3)
upstream
Released (2.6.5-3)