xbreaky $HOME/.breakyhighscores symlink attack

xbreaky-breakyhighscores-symlink (10078) The risk level is classified as MediumMedium Risk

Description:

xbreaky could allow a local attacker to launch a symlink attack. A local attacker could create a symbolic link from the $HOME/.breakyhighscores file to any file on the system, which would be overwritten with root privileges once xbreaky updates the new high scores to the .breakyhighscores file.


Consequences:

File Manipulation

Remedy:

No remedy available as of November 20, 2010.

References:

  • Full-Disclosure Mailing List, Tue Sep 10 2002 - 13:24:36 CDT: xbreaky 0.0.4 symlink vulnerability.
  • xbreaky Web site: Breaky Homepage. (On the front page for xbreaky, from the changelog dated September 12, 2002: "Marco van Berkum [the discloser] discovered a bug in xbreaky" and includes a short description of the problem.)
  • BID-5700: Xbreaky File Corruption Vulnerability
  • CVE-2002-1502: Symbolic link vulnerability in xbreaky before 0.5.5 allows local users to overwrite arbitrary files via a symlink from the user's .breakyhighscores file to the target file.
  • OSVDB ID: 14480: xbreaky Symlink Arbitrary File Overwrite

Platforms Affected:

  • Dave Brul xbreaky 0.0.4
  • OpenBSD OpenBSD

Reported:

Sep 10, 2002

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