CVE-2021-33818 Denial of service in n/a
Attackers can cause denial of service on UniFi Protect cameras by sending incomplete HTTP requests that exhaust server resources.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-33818?
CVE-2021-33818 is a high-severity denial of service vulnerability in n/a, published on 18 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-400
Which versions are affected by CVE-2021-33818?
It affects 1 product.
Products include Ui Camera G3 Flex Firmware.
How do I fix CVE-2021-33818?
No fix has been published for CVE-2021-33818 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2021-33818 being exploited?
There is no known exploitation of CVE-2021-33818 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-r7pq-69h8-pg3g.