CVE-2008-5706

The cTrigger::DoIt function in src/ctrigger.cpp in the trigger mechanism in the daemon in Verlihub 0.9.8d-RC2 and earlier allows local users to overwrite arbitrary files via a symlink attack on the /tmp/trigger.tmp 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://bugs.debian.org/506530
• http://openwall.com/lists/oss-security/2008/12/17/16
• http://securityreason.com/securityalert/4800
• http://www.securityfocus.com/bid/32889
• https://www.exploit-db.com/exploits/7183