CVE-2008-4977: Postfix

Medium severity, CVSS 6.9. EPSS: 0.4% chance of exploitation in the next 30 days.

postfix_groups.pl in Postfix 2.5.2 allows local users to overwrite arbitrary files via a symlink attack on the (1) /tmp/postfix_groups.stdout, (2) /tmp/postfix_groups.stderr, and (3) /tmp/postfix_groups.message temporary files. NOTE: the vendor disputes this vulnerability, stating "This is not a real issue ... users would have to edit a script under /usr/lib to enable it.

Affected products

• Postfix Postfix: version 2.5.2 only

Published 2008-11-06. Last modified 2026-06-16.