Advisory Details

September 22nd, 2021

VMware vCenter Server Appliance Service Lifecycle Manager Incorrect Permission Assignment Privilege Escalation Vulnerability

ZDI-21-1106
ZDI-CAN-13426

CVE ID CVE-2021-22015
CVSS SCORE 7.8, AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS VMware
AFFECTED PRODUCTS vCenter Server Appliance
VULNERABILITY DETAILS

This vulnerability allows local attackers to escalate privileges on affected installations of VMware vCenter Server Appliance. An attacker must first obtain the ability to execute low-privileged code on the target guest system in order to exploit this vulnerability.

The specific flaw exists within the Service Lifecycle Manager. The issue results from incorrect permissions set on a shell script. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of root.

ADDITIONAL DETAILS VMware has issued an update to correct this vulnerability. More details can be found at:
https://www.vmware.com/security/advisories/VMSA-2021-0020.html
DISCLOSURE TIMELINE
  • 2021-05-18 - Vulnerability reported to vendor
  • 2021-09-22 - Coordinated public release of advisory
CREDIT Sergey Gerasimov of Solidlab
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