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PulseAudio: Insecure temporary file usage

Content:

1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 201402-10 / pulseaudio
Release Date February 07, 2014
Latest Revision February 07, 2014: 1
Impact normal
Exploitable local
Package Vulnerable versions Unaffected versions Architecture(s)
media-sound/pulseaudio < 0.9.22 >= 0.9.22 All supported architectures

Related bugreports: #313329

Synopsis

An insecure temporary file usage has been reported in PulseAudio, possibly allowing symlink attacks.

2.  Impact Information

Background

PulseAudio is a sound system for POSIX OSes.

Description

The pa_make_secure_dir function in core-util.c does not handle temporary files securely.

Impact

A local attacker could perform symlink attacks 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 PulseAudio users should upgrade to the latest version:

Code Listing 3.1: Resolution

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=media-sound/pulseaudio-0.9.22"

4.  References



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Page updated February 07, 2014

Summary: This is a Gentoo Linux Security Advisory

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