CVE-2021-33822 Denial of service in n/a
Attackers can exhaust router resources via slow HTTP requests, causing a denial of service on the web server.
- 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-2021-33822?
CVE-2021-33822 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 on 4GEE ROUTER HH70VB Version HH70_E1_02.00_22. 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-2021-33822?
It affects 1 product.
Products include Sing4g 4gee Router Hh70vb Firmware.
How do I fix CVE-2021-33822?
No fix has been published for CVE-2021-33822 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-2021-33822 being exploited?
There is no known exploitation of CVE-2021-33822 in the wild and no public exploit code.
Sources
Also known as GHSA-x6fg-pgp3-2g2v.