CVE-2008-4580

fence_manual, as used in fence 2.02.00-r1 and possibly cman, allows local users to modify arbitrary files via a symlink attack on the fence_manual.fifo 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.gentoo.org/show_bug.cgi?id=240576
• http://www.openwall.com/lists/oss-security/2008/10/13/3
• http://www.openwall.com/lists/oss-security/2008/10/16/1
• http://www.ubuntu.com/usn/USN-875-1
• https://exchange.xforce.ibmcloud.com/vulnerabilities/45953
• http://bugs.gentoo.org/show_bug.cgi?id=240576
• http://www.openwall.com/lists/oss-security/2008/10/13/3
• http://www.openwall.com/lists/oss-security/2008/10/16/1
• http://www.ubuntu.com/usn/USN-875-1
• https://exchange.xforce.ibmcloud.com/vulnerabilities/45953