CVE-2010-0788

ncpfs 2.2.6 allows local users to cause a denial of service, obtain sensitive information, or possibly gain privileges via symlink attacks involving the (1) ncpmount and (2) ncpumount programs.

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/2010-January/034403.html
• http://lists.fedoraproject.org/pipermail/package-announce/2010-January/034422.html
• http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00002.html
• http://lists.opensuse.org/opensuse-security-announce/2010-06/msg00001.html
• http://seclists.org/fulldisclosure/2010/Mar/122
• http://secunia.com/advisories/38327
• http://secunia.com/advisories/38371
• http://www.securityfocus.com/archive/1/509893/100/0/threaded
• http://www.securityfocus.com/archive/1/509894/100/0/threaded
• http://www.securityfocus.com/bid/38563
• https://bugzilla.redhat.com/show_bug.cgi?id=532940
• https://bugzilla.redhat.com/show_bug.cgi?id=558833