xtrlock screen lock bypass

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

Description:

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.


Consequences:

Bypass Security

Remedy:

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.

References:

  • 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

Reported:

Jan 20, 2005

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