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Category:   Device (Storage)  >   HPE Virtual SAN Appliance Vendors:   HPE
HP Virtual SAN Appliance Stack Overflow in 'hydra.exe' Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1025249
SecurityTracker URL:
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Mar 23 2011
Impact:   Execution of arbitrary code via network, Root access via network

Description:   A vulnerability was reported in HP Virtual SAN Appliance. A remote user can execute arbitrary code on the target device.

A remote user can send a specially crafted login request to 'hydra.exe' on port 13838 to trigger a stack overflow and execute arbitrary code on the target system. The code will run with System privileges.

The vendor was notified on September 24, 2010.

The original advisory is available at:

Nicolas Gregoire of Agarri reported this vulnerability.

Impact:   A remote user can execute arbitrary code on the target system.
Solution:   No solution was available at the time of this entry.
Vendor URL: (Links to External Site)
Cause:   Boundary error

Message History:   None.

 Source Message Contents

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

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

March 23, 2011

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

-- Affected Vendors:

-- 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 (

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