xtrlock screen lock bypass

xtrlock-screen-lock-bypass (18991) The risk level is classified as MediumMedium Risk


xtrlock could allow a local attacker to bypass the screen locking mechanism and gain unauthorized access to the system. By pressing an arbitrary key for a period of one minute and then pressing the Enter key, a local attacker could to cause the program to crash, which would allow the attacker to gain access to the system.


Bypass Security


For Debian GNU/Linux 3.0 (woody):
Upgrade to the latest version of xtrlock (2.0-6woody2 or later), as listed in DSA-649-1. See References.

For other distributions:
Contact your vendor for upgrade or patch information.


  • BID-12316: xtrlock Unspecified Local Buffer Overflow Vulnerability
  • CVE-2005-0079: Buffer overflow in xtrlock 2.0 allows local users to cause a denial of service (application crash) and hijack the desktop session.
  • DSA-649: xtrlock -- buffer overflow
  • OSVDB ID: 13098: xtrlock Crash Screen Lock Bypass
  • SA13938: Debian xtrlock Security Bypass Vulnerability

Platforms Affected:

  • Debian Debian Linux 3.0
  • Debian xtrlock 2.0.8


Jan 20, 2005

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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