CVE-2013-2561

OpenFabrics ibutils 1.5.7 allows local users to overwrite arbitrary files via a symlink attack on (1) ibdiagnet.db, (2) ibdiagnet.fdbs, (3) ibdiagnet_ibis.log, (4) ibdiagnet.log, (5) ibdiagnet.lst, (6) ibdiagnet.mcfdbs, (7) ibdiagnet.pkey, (8) ibdiagnet.psl, (9) ibdiagnet.slvl, or (10) ibdiagnet.sm in /tmp/.

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://rhn.redhat.com/errata/RHSA-2013-1661.html
• http://seclists.org/fulldisclosure/2013/Mar/87
• http://www.openwall.com/lists/oss-security/2013/03/19/8
• http://www.openwall.com/lists/oss-security/2013/03/26/1
• http://www.openwall.com/lists/oss-security/2013/03/26/11
• http://www.openwall.com/lists/oss-security/2013/03/26/4
• http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
• http://www.securityfocus.com/bid/58335
• https://bugzilla.redhat.com/show_bug.cgi?id=927430