CVE-2021-33818

Public Exploit

Description

An issue was discovered in UniFi Protect G3 FLEX Camera Version UVC.v4.30.0.67. Attackers can use slowhttptest tool to send incomplete HTTP request, which could make server keep waiting for the packet to finish the connection, until its resource exhausted. Then the web server is denial-of-service.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.56%
Vendor Advisory ui.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/shekyan/slowhttptest third party advisory
https://store.ui.com/collections/unifi-protect-cameras/products/unifi-video-g3-flex-camera product vendor advisory
https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33818.md third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-33818?
CVE-2021-33818 has been scored as a high severity vulnerability.
How to fix CVE-2021-33818?
To fix CVE-2021-33818, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-33818 being actively exploited in the wild?
It is possible that CVE-2021-33818 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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