CVE-2008-2936

Published: 18 August 2008

Postfix before 2.3.15, 2.4 before 2.4.8, 2.5 before 2.5.4, and 2.6 before 2.6-20080814, when the operating system supports hard links to symlinks, allows local users to append e-mail messages to a file to which a root-owned symlink points, by creating a hard link to this symlink and then sending a message. NOTE: this can be leveraged to gain privileges if there is a symlink to an init script.

Priority

Low

Status

Package Release Status
postfix
Launchpad, Ubuntu, Debian
Upstream
Released (2.5.4)

Notes

AuthorNote
jdstrand
requires postfix as delivery agent, no root alias, no mail delivered
to root, and the 'mail' account (or an application in the 'mail' group) to
be compromised

References

Bugs