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GLSA-200809-09 : Postfix: Denial of Service

low Nessus Plugin ID 34248

Synopsis

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

Description

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.

Solution

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

https://security.gentoo.org/glsa/200809-09

Plugin Details

Severity: Low

ID: 34248

File Name: gentoo_GLSA-200809-09.nasl

Version: 1.15

Type: local

Published: 9/22/2008

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

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: 9/19/2008

Reference Information

CVE: CVE-2008-3889

CWE: 20

GLSA: 200809-09