CVE-2021-33820 — HIGH (7.5)

Vulnerability Description

An issue was discovered in UniFi Protect G3 FLEX Camera Version UVC.v4.30.0.67.Attacker could send a huge amount of TCP SYN packet to make web service's resource exhausted. Then the web server is denial-of-service.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Ui	Camera G3 Flex Firmware	uvc.v4.30.0.67
Ui	Camera G3 Flex	-

References

https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33820.mdExploitThird Party Advisory
https://linuxhint.com/hping3/Third Party Advisory
https://store.ui.com/collections/unifi-protect-cameras/products/unifi-video-g3-fProductVendor Advisory
https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33820.mdExploitThird Party Advisory
https://linuxhint.com/hping3/Third Party Advisory
https://store.ui.com/collections/unifi-protect-cameras/products/unifi-video-g3-fProductVendor Advisory

FAQ

What is CVE-2021-33820?

CVE-2021-33820 is a vulnerability with a CVSS score of 7.5 (HIGH). An issue was discovered in UniFi Protect G3 FLEX Camera Version UVC.v4.30.0.67.Attacker could send a huge amount of TCP SYN packet to make web service's resource exhausted. Then the web server is deni...

How severe is CVE-2021-33820?

CVE-2021-33820 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-33820?

Check the references section above for vendor advisories and patch information. Affected products include: Ui Camera G3 Flex Firmware, Ui Camera G3 Flex.