CVE-2015-0556

Open-source ARJ archiver 3.10.22 allows remote attackers to conduct directory traversal attacks via a symlink attack in an ARJ archive.

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://lists.fedoraproject.org/pipermail/package-announce/2015-April/154518.html
• http://lists.fedoraproject.org/pipermail/package-announce/2015-April/154605.html
• http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155011.html
• http://www.debian.org/security/2015/dsa-3213
• http://www.mandriva.com/security/advisories?name=MDVSA-2015:201
• http://www.openwall.com/lists/oss-security/2015/01/03/5
• http://www.openwall.com/lists/oss-security/2015/01/05/9
• http://www.securityfocus.com/bid/71860
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=774434
• https://security.gentoo.org/glsa/201612-15