Secunia

Karol Wiesek has reported two vulnerabilities in cPanel, which can be exploited by malicious, authenticated users to manipulate and disclose sensitive information.

1) A feature in cPanel allows users to install or remove frontpage extensions, which is done with effective uid of root. Also, the ownership of ".htaccess" can be changed to the user with 755 permissions. This can be exploited via a symlink attack to become owner of arbitrary files inside the same partition, which can further be exploited to manipulate arbitrary files.

2) The system backup insecurely follows hard links. This can be exploited to get a copy of arbitrary files from the same partition.

The vulnerabilities have been reported in version 9.4.1-RELEASE-64. Other versions may also be affected.

Solution
According to the vendor, this was fixed on 2004-10-20.

Provided and/or discovered by
Karol Wiesek

Changelog
Further details available in Customer Area

Deep Links
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