ZDI-11-111: (0Day) Hewlett-Packard Virtual SAN Appliance hydra.exe Login Request Remote Code Execution Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-11-111

March 23, 2011

-- CVSS:
10, (AV:N/AC:L/Au:N/C:C/I:C/A:C)

-- Affected Vendors:
Hewlett-Packard

-- Affected Products:
Hewlett-Packard Virtual SAN Appliance

-- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Hewlett-Packard Virtual SAN appliance.
Authentication is not required to exploit this vulnerability. 

The flaw exists within the hydra.exe component which listens by default
on port 13838. When parsing a login request the Hydra daemon will call
sscanf() using fixed-length stack buffers and no length checks. A remote
attacker can exploit this vulnerability to execute arbitrary code under
the context of the SYSTEM service.

-- Vendor Response:
March 23, 2011 - This vulnerability is being disclosed publicly without
a patch in accordance with the ZDI 180 day deadline.

-- Mitigations:
This vulnerability could be mitigated by administrators by restricting
communication with the hydra agent to known client IP addresses.

-- Disclosure Timeline:
2010-09-24 - Vulnerability reported to vendor
2011-03-23 - Public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Nicolas Gregoire of Agarri (www.agarri.fr)

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