CVE-2021-21999: VMware Workstation Tools Uncontrolled Search Path Element Local Privilege Escalation Vulnerability
This vulnerability allows local attackers to escalate privileges on affected installations of VMware Workstation. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the VGAuthService service. The issue results from the lack of proper validation of a user-supplied OpenSSL configuration file prior to using it. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM.
Other sources
VMware Tools for Windows (11.x.y prior to 11.2.6), VMware Remote Console for Windows (12.x prior to 12.0.1) , VMware App Volumes (2.x prior to 2.18.10 and 4 prior to 2103) contain a local privilege escalation vulnerability. An attacker with normal access to a virtual machine may exploit this issue by placing a malicious file renamed as openssl.cnf' in an unrestricted directory which would allow code to be executed with elevated privileges.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is CVE-2021-21999?
CVE-2021-21999 is a vulnerability that allows local attackers to escalate privileges on affected installations of VMware Workstation.
How can this vulnerability be exploited?
An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
What is the severity of CVE-2021-21999?
CVE-2021-21999 has a severity rating of 7.8, which is considered high.
Which software is affected by CVE-2021-21999?
VMware Workstation, VMware App Volumes, VMware Remote Console, and VMware Tools are affected by CVE-2021-21999.
How can I fix CVE-2021-21999?
Update to the latest version of VMware Workstation or apply the patches provided by VMware.