Vulnerability Note VU#105347

XMCD vulnerable to arbitrary file overwriting via symlink redirection of temporary file

Original Release date: 15 Nov 2001 | Last revised: 15 Nov 2001

Overview

xmcd is an x11/motif CD playing utility, in the public domain. cda, the command line interface to xmcd, executes with system administrator privileges. It is vulnerable to a symbolic link attack that may allow a local user to obtain administrator privileges.

Description

cda, the command line interface to xmcd, executes with system administrator privileges. It creates insecure temporary files with predictable names in /tmp, a world-writable directory.

Impact

By creating symbolic links with appropriate names, a local attacker may overwrite any writable file on the system. If the attacker can control the content of the overwritten files, elevation of privileges may result.

Solution

Apply vendor patches; see the Systems Affected section below.

Remove the setuid protection from cda.

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
SuSEAffected23 Aug 200124 Sep 2001
CalderaNot Affected27 Sep 200127 Sep 2001
DebianNot Affected27 Sep 200127 Sep 2001
IBMUnknown27 Sep 200115 Nov 2001
RedHatUnknown27 Sep 200115 Nov 2001
SequentUnknown27 Sep 200115 Nov 2001
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A N/A

References

Credit

This vulnerability was first reported by Paul Starzetz.

This document was last modified by Tim Shimeall.

Other Information

  • CVE IDs: Unknown
  • Date Public: 23 Aug 2001
  • Date First Published: 15 Nov 2001
  • Date Last Updated: 15 Nov 2001
  • Severity Metric: 9.98
  • Document Revision: 11

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