CVE-2021-34858: Teamviewer TVS File Parsing Out-Of-Bounds Read Remote Code Execution Vulnerability
First published: Thu Jan 13 2022(Updated: )
This vulnerability allows remote attackers to execute arbitrary code on affected installations of TeamViewer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of TVS files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated structure. An attacker can leverage this vulnerability to execute code in the context of the current process.
Credit: zdi-disclosures@trendmicro.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Teamviewer Teamviewer | <15.21.2 | |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2021-34858.
What is the title of the vulnerability?
The title of the vulnerability is Teamviewer TVS File Parsing Out-Of-Bounds Read Remote Code Execution Vulnerability.
How can remote attackers exploit this vulnerability?
Remote attackers can exploit this vulnerability by executing arbitrary code on affected installations of TeamViewer, requiring user interaction such as visiting a malicious page or opening a malicious file.
What software is affected by this vulnerability?
The affected software is TeamViewer up to version 15.21.2.
What is the severity of CVE-2021-34858?
The severity of CVE-2021-34858 is high with a CVSS score of 7.8.
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