ESXi 5.5 < Build 3248547 Shared Folders (HGFS) Guest Privilege Escalation (VMSA-2016-0001) (remote check)
Medium Nessus Plugin ID 87942
SynopsisThe remote VMware ESXi 5.5 host is affected by a guest privilege escalation vulnerability.
DescriptionThe remote VMware ESXi 5.5 host is prior to build 3248547. It is, therefore, affected by a guest privilege escalation vulnerability in the Shared Folders (HGFS) feature due to improper validation of user-supplied input. A local attacker can exploit this to corrupt memory, resulting in an elevation of privileges.
SolutionApply patch ESXi550-201512102-SG according to the vendor advisory.
Note that VMware Tools in any Windows-based guests that use the Shared Folders (HGFS) feature must also be updated to completely mitigate the vulnerability.