Risk | High |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-30480 |
CWE-ID | CWE-20 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
Zoom Client for Windows Client/Desktop applications / Office applications |
Vendor | Zoom Video Communications, Inc. |
Security Bulletin
This security bulletin contains one high risk vulnerability.
EUVDB-ID: #VU52199
Risk: High
CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-30480
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe 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.
Install update from vendor's website.
Vulnerable software versionsZoom Client for Windows: 5.0.0 23168.0427 - 5.6.1 617
External linkshttp://blog.malwarebytes.com/exploits-and-vulnerabilities/2021/04/zoom-zero-day-discovery-makes-calls-safer-hackers-200000-richer/
http://twitter.com/thezdi/status/1379855435730149378
http://twitter.com/thezdi/status/1379859851061395459
http://www.securityweek.com/200000-awarded-zero-click-zoom-exploit-pwn2own
http://www.zdnet.com/article/critical-zoom-vulnerability-triggers-remote-code-execution-without-user-input/
http://zoom.us/feature/messaging
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to trick the victim to visit a specially crafted website or open a file.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.