VDR: Arbitrary file overwriting issue

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200501-42 / VDR
Release Date	January 30, 2005
Latest Revision	January 30, 2005: 01
Impact	normal
Exploitable	local

Package	Vulnerable versions	Unaffected versions	Architecture(s)
media-video/vdr	< 1.2.6-r1	>= 1.2.6-r1	All supported architectures

Related bugreports: #78230

Synopsis

VDR insecurely accesses files with elevated privileges, which may result in the overwriting of arbitrary files.

2. Impact Information

Background

Video Disk Recorder (VDR) is a Linux-based digital video recorder. The VDR program handles the On Screen Menu system that offers complete control over channel settings, timers and recordings.

Description

Javier Fernandez-Sanguino Pena from the Debian Security Audit Team discovered that VDR accesses user-controlled files insecurely.

Impact

A local attacker could create malicious links and invoke a VDR recording that would overwrite arbitrary files on the system.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All VDR users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-video/vdr-1.2.6-r1"

4. References

CAN-2005-0071

Updated January 30, 2005

Summary: This is a Gentoo Linux Security Advisory

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