SB2021041402 - Remote code execution in Zoom Chat for Windows
Published: April 14, 2021 Updated: May 24, 2022
Security Bulletin ID
SB2021041402
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2021-30480)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to insufficient validation of user-supplied input, related to contact requests in Zoom Chat feature. A remote Zoom user can pass specially crafted request to the application and execute arbitrary code on the system.
Remediation
Install update from vendor's website.
References
- https://blog.malwarebytes.com/exploits-and-vulnerabilities/2021/04/zoom-zero-day-discovery-makes-calls-safer-hackers-200000-richer/
- https://twitter.com/thezdi/status/1379855435730149378
- https://twitter.com/thezdi/status/1379859851061395459
- https://www.securityweek.com/200000-awarded-zero-click-zoom-exploit-pwn2own
- https://www.zdnet.com/article/critical-zoom-vulnerability-triggers-remote-code-execution-without-user-input/
- https://zoom.us/feature/messaging