VMware released an ESX 4.1 update to third party libraries. The complete advisory can be viewed here.
VMware updated advisory VMSA-2013-0007 for ESX 4.0 and 4.1 related to third party update for Service Console package sudo. Additional information on this update is can be viewed here.
ESXi isn't affected by these updates.
[1] VMSA-2013-0015 http://www.vmware.com/security/advisories/VMSA-2013-0015.html
[2] VMSA-2013-0007.1 http://www.vmware.com/security/advisories/VMSA-2013-0007.html
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Guy Bruneau IPSS Inc. gbruneau at isc dot sans dot edu
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