CVE-2011-3632

Hardlink before 0.1.2 operates on full file system objects path names which can allow a local attacker to use this flaw to conduct symlink attacks.

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

• https://access.redhat.com/security/cve/cve-2011-3632
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=645516
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-3632
• https://security-tracker.debian.org/tracker/CVE-2011-3632
• https://www.openwall.com/lists/oss-security/2011/10/15/2
• https://www.openwall.com/lists/oss-security/2011/10/20/6