CVE-2021-21989: VMware Workstation ThinPrint TTCHeader Integer Overflow Information Disclosure Vulnerability
First published: Mon May 24 2021(Updated: )
This vulnerability allows local attackers to disclose sensitive information on affected installations of VMware Workstation. 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 ThinPrint component. Crafted data in a font file can result in an integer overflow before reading from memory. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the hypervisor.
Credit: security@vmware.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| VMware Workstation | >=16.0.0<16.1.2 | |
| Vmware Horizon Client | >=5.0.0<5.5.2 | |
| Microsoft Windows | ||
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Reference Links
Frequently Asked Questions
What is CVE-2021-21989?
CVE-2021-21989 is a vulnerability that allows local attackers to disclose sensitive information on affected installations of VMware Workstation.
How does CVE-2021-21989 work?
CVE-2021-21989 allows attackers who have the ability to execute low-privileged code on the target guest system to exploit this vulnerability.
What is the severity of CVE-2021-21989?
The severity of CVE-2021-21989 is medium, with a severity value of 6.5.
Which products are affected by CVE-2021-21989?
VMware Workstation versions 16.0.0 to 16.1.2 and VMware Horizon Client versions 5.0.0 to 5.5.2 are affected by CVE-2021-21989.
How can I fix CVE-2021-21989?
Update your VMware Workstation to a version higher than 16.1.2 or update your VMware Horizon Client to a version higher than 5.5.2 to fix CVE-2021-21989.
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