Gentoo Logo

Mgetty: Insecure temporary file usage

Content:

1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200812-08 / mgetty
Release Date December 06, 2008
Latest Revision December 23, 2008: 02
Impact normal
Exploitable local
Package Vulnerable versions Unaffected versions Architecture(s)
net-dialup/mgetty < 1.1.36-r3 >= 1.1.36-r3 All supported architectures

Related bugreports: #235806

Synopsis

Mgetty uses temporary files in an insecure manner, allowing for symlink attacks.

2.  Impact Information

Background

Mgetty is a set of fax and voice modem programs.

Description

Dmitry E. Oboukhov reported that the "spooldir" directory in fax/faxspool.in is created in an insecure manner.

Impact

A local attacker could exploit this vulnerability to overwrite arbitrary files with the privileges of the user running the application.

3.  Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All Mgetty users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-dialup/mgetty-1.1.36-r3"

4.  References



Print

Page updated December 06, 2008

Summary: This is a Gentoo Linux Security Advisory

Security Team
Contact Address

Donate to support our development efforts.

Copyright 2001-2014 Gentoo Foundation, Inc. Questions, Comments? Contact us.