CVE-2021-40423 Denial of service in n/a
An attacker can cause a denial of service on Reolink cameras by sending specially crafted HTTP requests to the API command parser.
- 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-2021-40423?
CVE-2021-40423 is a high-severity denial of service vulnerability in Reolink Rlc-410w Firmware, published on 28 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A denial of service vulnerability exists in the cgiserver.cgi API command parser functionality of Reolink RLC-410W v3.0.0.136_20121102. A specially-crafted series of HTTP requests can lead to denial of service. An attacker can send an HTTP request to trigger this vulnerability.
Weakness: CWE-20
Which versions are affected by CVE-2021-40423?
It affects 1 product.
Products include Reolink Rlc-410w Firmware.
How do I fix CVE-2021-40423?
No fix has been published for CVE-2021-40423 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-2021-40423 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-40423 exists.
Other vulnerabilities in Reolink Rlc-410w Firmware
Sources
Also known as GHSA-4grj-8qw5-j9f8.