VMware ESXi VMXNET3 Integer Overflow Privilege Escalation Vulnerability

TL;DR

A critical vulnerability in VMware ESXi's VMXNET3 allows for local privilege escalation via an integer overflow.

What happened

["VMware ESXi's VMXNET3 driver contains a local privilege escalation flaw", 'Attackers can exploit the integer overflow to gain higher privileges']

Why it matters for ops

['The vulnerability exists due to insufficient validation of input parameters', 'Exploitation requires initial high-privileged access on guest systems']

Mitigation

• Apply the latest patches from VMware to address this vulnerability
• Monitor and restrict administrative privileges on guest systems

Action items

• Update affected VMware ESXi installations immediately
• Review system configurations for proper privilege management

Detection IOCs

• Unexpected privilege escalation events in VMware ESXi logs

Source link

http://www.zerodayinitiative.com/advisories/ZDI-26-189/