CVE-2009-1526

JBMC Software DirectAdmin before 1.334 allows local users to create or overwrite any file via a symlink attack on an arbitrary file in a certain temporary directory, related to a request for this temporary file in the PATH_INFO to the CMD_DB script during a backup action.

Weakness

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

Affected Software

Potential Mitigations

• Follow the principle of least privilege when assigning access rights to entities in a software system.
• Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/132.html
• https://cwe.mitre.org/data/definitions/17.html
• https://cwe.mitre.org/data/definitions/35.html
• https://cwe.mitre.org/data/definitions/76.html

References

• http://archives.neohapsis.com/archives/fulldisclosure/2009-04/0228.html
• http://osvdb.org/54014
• http://secunia.com/advisories/34861
• http://www.directadmin.com/features.php?id=968
• http://archives.neohapsis.com/archives/fulldisclosure/2009-04/0228.html
• http://osvdb.org/54014
• http://secunia.com/advisories/34861
• http://www.directadmin.com/features.php?id=968