High severity · published Jun 18, 2021
CVE-2021-33820
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
7.5
CVSS
1.9%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.9% · higher than 80% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CG
Camera G3 Flex Firmware · UI
uvc.v4.30.0.67 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-33820
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-33820
Exploit
https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33820.md
Third Party Advisory
https://linuxhint.com/hping3/
Product
https://store.ui.com/collections/unifi-protect-cameras/products/unifi-video-g3-flex-camera
More from Camera G3 Flex Firmware
7.5
CVE-2021-33818
An issue was discovered in UniFi Protect G3 FLEX Camera Version UVC.v4.30.0.67