CVE-2007-1027

Certain setuid DB2 binaries in IBM DB2 before 9 Fix Pack 2 for Linux and Unix allow local users to overwrite arbitrary files via a symlink attack on the DB2DIAG.LOG temporary file.

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://osvdb.org/34024
• http://secunia.com/advisories/24213
• http://www-1.ibm.com/support/docview.wss?uid=swg1IY94817
• http://www.securityfocus.com/bid/22614
• http://www.securitytracker.com/id?1017665
• http://www.securitytracker.com/id?1017695
• http://www.vupen.com/english/advisories/2007/0652