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Category:   Application (Multimedia)  >   Video Disk Recorder Vendors:   cadsoft.de
(Gentoo Issues Fix) Video Disk Recorder Lets Remote Users Overwrite Files
SecurityTracker Alert ID:  1013048
SecurityTracker URL:  http://securitytracker.com/id/1013048
CVE Reference:   CVE-2005-0071   (Links to External Site)
Date:  Jan 31 2005
Impact:   Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 1.0.0
Description:   A vulnerability was reported in Video Disk Recorder (vdr). A remote user can cause arbitrary files to be overwritten.

Debian reported that the vdr daemon creates files in an unsafe manner.

The flaw resides in 'dvbapi.c'.

Javier Fernandez-Sanguino Pena from the Debian Security Audit Team is credited with discovering this flaw.

Impact:   A remote user can cause files on the target system to be overwritten.
Solution:   Gentoo has released a fix and indicates that all VDR users should upgrade to the latest version:

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

Vendor URL:  www.cadsoft.de/vdr/index.htm (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Gentoo)

Message History:   This archive entry is a follow-up to the message listed below.
Jan 25 2005 Video Disk Recorder Lets Remote Users Overwrite Files



 Source Message Contents

Subject:  [gentoo-announce] [ GLSA 200501-42 ] VDR: Arbitrary file overwriting issue


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Gentoo Linux Security Advisory                           GLSA 200501-42
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: VDR: Arbitrary file overwriting issue
      Date: January 30, 2005
      Bugs: #78230
        ID: 200501-42

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Synopsis
========

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

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.

Affected packages
=================

    -------------------------------------------------------------------
     Package          /  Vulnerable  /                      Unaffected
    -------------------------------------------------------------------
  1  media-video/vdr     < 1.2.6-r1                        >= 1.2.6-r1

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.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All VDR users should upgrade to the latest version:

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

References
==========

  [ 1 ] CAN-2005-0071
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0071

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  http://security.gentoo.org/glsa/glsa-200501-42.xml

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2005 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.0


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