CVE-2022-37134 Memory corruption in n/a

Critical 9.8 Published 22 Aug 2022 Updated 3 Aug 2024

A buffer overflow in the D-Link DIR-816 router allows attackers to execute arbitrary code or cause a denial of service via a crafted L2TP username.

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-2022-37134?

CVE-2022-37134 is a critical memory corruption vulnerability in Dlink Dir-816 Firmware, published on 22 Aug 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

D-link DIR-816 A2_v1.10CNB04.img is vulnerable to Buffer Overflow via /goform/form2Wan.cgi. When wantype is 3, l2tp_usrname will be decrypted by base64, and the result will be stored in v94, which does not check the size of l2tp_usrname, resulting in stack overflow.

Weakness: CWE-1284

Which versions are affected by CVE-2022-37134?

It affects 1 product.

Products include Dlink Dir-816 Firmware.

How do I fix CVE-2022-37134?

No fix has been published for CVE-2022-37134 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-2022-37134 being exploited?

There is no known exploitation of CVE-2022-37134 in the wild and no public exploit code.

All Dlink Dir-816 Firmware vulnerabilities

Sources

Also known as GHSA-fxcp-h947-pw6p.