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