CVE-2021-42659 Memory corruption in n/a
A buffer overflow in the Tenda router web server causes a crash when processing long virtual service parameters, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-42659?
CVE-2021-42659 is a medium-severity memory corruption vulnerability in Tenda Ac9 Firmware, published on 24 May 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
There is a buffer overflow vulnerability in the Web server httpd of the router in Tenda router devices such as Tenda AC9 V1.0 V15.03.02.19(6318) and Tenda AC9 V3.0 V15.03.06.42_multi. When setting the virtual service, the httpd program will crash and exit when the super-long list parameter occurs.
Weakness: CWE-119
Which versions are affected by CVE-2021-42659?
It affects 1 product.
Products include Tenda Ac9 Firmware.
How do I fix CVE-2021-42659?
No fix has been published for CVE-2021-42659 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-42659 being exploited?
There is no known exploitation of CVE-2021-42659 in the wild and no public exploit code.
Other vulnerabilities in Tenda Ac9 Firmware
Sources
Also known as GHSA-mf8h-g57h-xqhr.