C* music player: Insecure temporary file usage

1. Gentoo Linux Security Advisory

Package	Vulnerable versions	Unaffected versions	Architecture(s)
media-sound/cmus	< 2.2.0-r1	>= 2.2.0-r1	All supported architectures

Related bugreports: #250474

An insecure temporary file usage has been reported in the C* music player, allowing for symlink attacks.

2. Impact Information

The C* Music Player (cmus) is a modular and very configurable ncurses-based audio player.

Dmitry E. Oboukhov reported that cmus-status-display does not handle the "/tmp/cmus-status" temporary file securely.

A local attacker could perform symlink attacks to overwrite arbitrary files with the privileges of the user running the application.

3. Resolution Information

There is no known workaround at this time.

All C* music player users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-sound/cmus-2.2.0-r1"

4. References

Page updated September 09, 2009

Summary: This is a Gentoo Linux Security Advisory

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