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Sense of Security – Security Advisory – SOS-11-004 – cPassMan v1.82 Arbitrary File Download

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Sense of Security – Security Advisory – SOS-11-004

Release Date. 15-Apr-2011
Last Update.
Vendor Notification Date. 7-Mar-2011
Product. Collaborative Passwords Manager (cPassMan)
Platform. Independent (PHP)
Affected versions. 1.82 (verified), and possibly others
Severity Rating. Medium
Impact. Local file system access
Attack Vector. Remote without authentication
Solution Status. Upgrade to v2.0, v1.x branch no longer updated
CVE reference. CVE – Not yet assigned

 

Details.

A vulnerability has been discovered in the Collaborative Passwords Manager (cPassMan) web application that can be exploited to retrieve files from the local host file system. The input passed to the component “sources/downloadfile.php” via the “path” variable allows the retrieval of any file on the local file system that the web server has access to. There is no data validation or authorisation mechanisms present within this component.

 

Proof of Concept.

http://localhost/cpassman/sources/downloadfile.php?path=/etc/passwd

 

Solution.

The author (Nils Laumaille) has indicated that the v1.x branch of cPassMan will no longer be updated, as he has rewritten the application and v2.0 is now the recommended release.

 

Discovered by.

Kaan Kivilcim – Sense of Security Labs.