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Security Response to CERT 412115: AMD PCNet Windows Driver Security Vulnerabilites (1437)


A network security scan or report indicates that the Windows driver for the virtual NIC in my guest operating system may have a buffer vulnerability. An overview of this vulnerability is published by at and also appears on the BugTraq mailing list at The virtual machine is configured to use a virtual NIC that appears to the operating system as an AMD PCNet adapter (vlance). 


AMD reports that this vulnerabilitity has been fixed in version 4.51 of the NDIS5 Windows driver for the AMD PCNet family of network adapters. If you need to use the AMD PCNet family of network adapters, contact AMD for an updated driver.
The vmxnet driver for Windows does not have this vulnerability. This driver is included with VMware Tools.
For a list of guest operating systems that VMware has vmxnet drivers for, see Which Guests Have the vmxnet Driver? (1435).


1437; 1036; URLZ; adaptor; leak; DOS; attack; alertz; etherleak; bugtraq; 324300;

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