VulnerabilityModified
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.
HIGH 7.5EPSS 1.93%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.93%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.93% probability · 79th percentile
- CISA KEV
- Not listed
- Affected
- ui/camera g3 flex firmware
- Source
- cve@mitre.org
References
- https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33820.mdExploit, Third Party Advisory
- https://linuxhint.com/hping3/Third Party Advisory
- https://store.ui.com/collections/unifi-protect-cameras/products/unifi-video-g3-flex-cameraProduct, Vendor Advisory
- https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33820.mdExploit, Third Party Advisory
- https://linuxhint.com/hping3/Third Party Advisory
- https://store.ui.com/collections/unifi-protect-cameras/products/unifi-video-g3-flex-cameraProduct, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.