Advisory Details

August 16th, 2011

Symantec Veritas Storage Foundation vxsvc.exe ASCII String Unpacking Remote Code Execution Vulnerability

ZDI-11-263
ZDI-CAN-1112

CVE ID CVE-2011-0547
CVSS SCORE 10, (AV:N/AC:L/Au:N/C:C/I:C/A:C)
AFFECTED VENDORS Symantec
AFFECTED PRODUCTS Veritas Storage Foundation
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 11574. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Symantec Veritas Storage Foundation Administrator Service. Authentication is not required to exploit this vulnerability.

The specific flaw exists within vxsvc.exe. The problem affecting the part of the server running on TCP port 2148 is an integer overflow in the function vxveautil.value_binary_unpack during the handling of the ascii strings (opcode 6) where the 32-bit field supplied by the attacker is used for allocating a destination buffer by adding an additional byte to its value. This integer overflow can be used to create a small allocation which will be subsequently overflowed, allowing the attacker to execute arbitrary code under the context of the SYSTEM.

VENDOR RESPONSE Symantec has issued an update to correct this vulnerability. More details can be found at:
http://www.symantec.com/business/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=2011&suid=20110815_00
DISCLOSURE TIMELINE
  • 2011-02-17 - Vulnerability reported to vendor
  • 2011-08-16 - Coordinated public release of advisory
CREDIT Luigi Auriemma
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