CVE-2021-45739 Denial of service in n/a
Attackers can cause a Denial of Service on TOTOLINK A720R routers by exploiting a stack overflow in the login function.
- 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-2021-45739?
CVE-2021-45739 is a high-severity denial of service vulnerability in n/a, published on 4 Feb 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
TOTOLINK A720R v4.1.5cu.470_B20200911 was discovered to contain a stack overflow in the Form_Login function. This vulnerability allows attackers to cause a Denial of Service (DoS) via the flag parameter.
Which versions are affected by CVE-2021-45739?
It affects 1 product.
Products include Totolink A720r Firmware.
How do I fix CVE-2021-45739?
No fix has been published for CVE-2021-45739 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-2021-45739 being exploited?
There is no known exploitation of CVE-2021-45739 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-2vw5-8fhm-cvqc.