CVEs-PoC/2021/CVE-2021-21991.md

CVE-2021-21991

Description

The vCenter Server contains a local privilege escalation vulnerability due to the way it handles session tokens. A malicious actor with non-administrative user access on vCenter Server host may exploit this issue to escalate privileges to Administrator on the vSphere Client (HTML5) or vCenter Server vSphere Web Client (FLEX/Flash).

POC

Reference

• https://www.vmware.com/security/advisories/VMSA-2021-0020.html
• https://www.vmware.com/security/advisories/VMSA-2021-0020.html

Github

• https://github.com/HynekPetrak/HynekPetrak