CVE-2010-4173

The default configuration of libsdp.conf in libsdp 1.1.104 and earlier creates log files in /tmp, which allows local users to overwrite arbitrary files via a (1) symlink or (2) hard link attack on the libsdp.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://www.openfabrics.org/downloads/libsdp/libsdp-1.1.105-0.4.g1b9b996.tar.gz
• http://www.openwall.com/lists/oss-security/2010/11/16/2
• http://www.openwall.com/lists/oss-security/2010/11/16/7
• https://bugzilla.redhat.com/show_bug.cgi?id=647941