policyd-weight: Insecure temporary file creation
Gentoo Linux Security Advisory
||GLSA 200804-11 / policyd-weight
||April 11, 2008
||April 11, 2008: 01
All supported architectures
policyd-weight uses temporary files in an insecure manner, allowing for a
policyd-weight is a Perl policy daemon for the Postfix MTA intended to
eliminate forged envelope senders and HELOs.
Chris Howells reported that policyd-weight creates and uses the
"/tmp/.policyd-weight/" directory in an insecure manner.
A local attacker could exploit this vulnerability to delete arbitrary
files or change the ownership to the "polw" user via symlink attacks.
Set "$LOCKPATH = '/var/run/policyd-weight/'" manually in
All policyd-weight users should upgrade to the latest version:
Code Listing 3.1: Resolution
# emerge --sync
# emerge --ask --oneshot --verbose ">=mail-filter/policyd-weight-0.1.14.17"
This version changes the default path for sockets to
"/var/run/policyd-weight", which is only writable by a privileged user.
Users need to restart policyd-weight immediately after the upgrade due
to this change.