GLSA-200809-09 : Postfix: Denial of Service

Low Nessus Plugin ID 34248


The remote Gentoo host is missing one or more security-related patches.


The remote host is affected by the vulnerability described in GLSA-200809-09 (Postfix: Denial of Service)

It has been discovered than Postfix leaks an epoll file descriptor when executing external commands, e.g. user-controlled $HOME/.forward or $HOME/.procmailrc files. NOTE: This vulnerability only concerns Postfix instances running on Linux 2.6 kernels.
Impact :

A local attacker could exploit this vulnerability to reduce the performance of Postfix, and possibly trigger an assertion, resulting in a Denial of Service.
Workaround :

Allow only trusted users to control delivery to non-Postfix commands.


All Postfix 2.4 users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=mail-mta/postfix-2.4.9' All Postfix 2.5 users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=mail-mta/postfix-2.5.5'

See Also

Plugin Details

Severity: Low

ID: 34248

File Name: gentoo_GLSA-200809-09.nasl

Version: $Revision: 1.12 $

Type: local

Published: 2008/09/22

Modified: 2015/04/13

Dependencies: 12634

Risk Information

Risk Factor: Low


Base Score: 2.1

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:P

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:postfix, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Patch Publication Date: 2008/09/19

Reference Information

CVE: CVE-2008-3889

OSVDB: 48108

GLSA: 200809-09

CWE: 20