CVE-2009-0876

Sun xVM VirtualBox 2.0.0, 2.0.2, 2.0.4, 2.0.6r39760, 2.1.0, 2.1.2, and 2.1.4r42893 on Linux allows local users to gain privileges via a hardlink attack, which preserves setuid/setgid bits on Linux, related to DT_RPATH:$ORIGIN.

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://osvdb.org/52580
• http://secunia.com/advisories/34232
• http://sunsolve.sun.com/search/document.do?assetkey=1-66-254568-1
• http://www.openwall.com/lists/oss-security/2009/03/15/1
• http://www.openwall.com/lists/oss-security/2009/03/17/2
• http://www.securityfocus.com/bid/34080
• http://www.securitytracker.com/id?1021841
• http://www.virtualbox.org/ticket/3444
• http://www.vupen.com/english/advisories/2009/0674
• https://bugs.gentoo.org/show_bug.cgi?id=260331
• https://exchange.xforce.ibmcloud.com/vulnerabilities/49193