[ GLSA 200804-11 ] policyd-weight: Insecure temporary file creation

[GLSA]

Gentoo Linux Security Advisory

Title: policyd-weight: Insecure temporary file creation (GLSA 200804-11)
Severity: normal
Exploitable: local
Date: April 11, 2008
Bug(s): #214403
ID: 200804-11

Synopsis

policyd-weight uses temporary files in an insecure manner, allowing for a symlink attack.

Background

policyd-weight is a Perl policy daemon for the Postfix MTA intended to eliminate forged envelope senders and HELOs.

Affected Packages

Package: mail-filter/policyd-weight
Vulnerable: < 0.1.14.17
Unaffected: >= 0.1.14.17
Architectures: All supported architectures


Description

Chris Howells reported that policyd-weight creates and uses the "/tmp/.policyd-weight/" directory in an insecure manner.

Impact

A local attacker could exploit this vulnerability to delete arbitrary files or change the ownership to the "polw" user via symlink attacks.

Workaround

Set " $LOCKPATH = '/var/run/policyd-weight/' " manually in "/etc/policyd-weight.conf".

Resolution

All policyd-weight users should upgrade to the latest version: