ZDI-11-165: HP 3COM/H3C Intelligent Management Center tftpserver opcode_table Remote Code Execution Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-11-165

May 10, 2011

-- CVE ID:
CVE-2011-1853

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

-- Affected Vendors:
Hewlett-Packard

-- Affected Products:
Hewlett-Packard H3C Intelligent Management Center

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 10906. 
For further product information on the TippingPoint IPS, visit:

    http://www.tippingpoint.com

-- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of HP 3com/H3C Intelligent Management Center.
Authentication is not required to exploit this vulnerability. 

The flaw exists within the tftpserver.exe component which listens by
default on UDP port 69. When handling the opcode word of a packet the
process uses this value as a lookup into a function pointer table. The
process then calls into the calculated address. By supplying a large or
invalid value a remote attacker can exploit this vulnerability to
execute arbitrary code under the context of the SYSTEM user.

-- Vendor Response:
Hewlett-Packard has issued an update to correct this vulnerability. More
details can be found at:

http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02822750

-- Disclosure Timeline:
2010-12-01 - Vulnerability reported to vendor
2011-05-10 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Luigi Auriemma

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