[ GLSA 200601-04 ] VMware Workstation: Vulnerability in NAT networking

[GLSA]

Gentoo Linux Security Advisory

Title: VMware Workstation: Vulnerability in NAT networking (GLSA 200601-04)
Severity: high
Exploitable: remote and local
Date: January 07, 2006
Updated: May 25, 2006
Bug(s): #116238
ID: 200601-04

Synopsis


VMware guest operating systems can execute arbitrary code with elevated
privileges on the host operating system through a flaw in NAT networking.


Background


VMware Workstation is a powerful virtual machine for developers and
system administrators.


Affected Packages

Package: app-emulation/vmware-workstation
Vulnerable: < 5.5.1.19175
Unaffected: >= 5.5.1.19175
Unaffected: >= 4.5.3.19414 < 4.5.3.19415
Unaffected: >= 3.2.1.2242-r10 < 3.2.1.2243
Architectures: All supported architectures


Description


Tim Shelton discovered that vmnet-natd, the host module providing
NAT-style networking for VMware guest operating systems, is unable to
process incorrect 'EPRT' and 'PORT' FTP requests.


Impact


Malicious guest operating systems using the NAT networking feature or
local VMware Workstation users could exploit this vulnerability to
execute arbitrary code on the host system with elevated privileges.


Workaround


Disable the NAT service by following the instructions at http://www.vmware.com/support/k
b , Answer ID 2002.


Resolution


All VMware Workstation users should upgrade to a fixed version: