J-Security Center

Title: Multiple Vendor xfs Symlink Vulnerability

Severity: MODERATE

Description:

Xfs, the Xfree86 font server included with RedHat 5.1 is vulnerable to a /tmp symbolic link attack. Xfs creates a file in /tmp called .font-unix that will be followed if a symlink. Any file pointed to by the symbolic link will be overwritten.

Affected Products:

  • Caldera OpenLinux Standard 1.2.0
  • Debian Linux 2.0.0
  • Debian Linux 2.0.0 r5
  • Debian Linux 2.1.0
  • NetBSD NetBSD 1.3.3
  • Pacific HiTech TurboLinux 1.2.0
  • RedHat Linux 5.1.0
  • S.u.S.E. Linux 5.3.0

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