CVE-2022-43972 Null pointer dereference in Linksys WRT54GL
An unauthenticated attacker can cause a denial of service on Linksys WRT54GL routers by triggering a null pointer dereference in the UPnP 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-2022-43972?
CVE-2022-43972 is a medium-severity vulnerability in Linksys WRT54GL Wireless-G Broadband Router, published on 9 Jan 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A null pointer dereference vulnerability exists in Linksys WRT54GL Wireless-G Broadband Router with firmware <= 4.30.18.006. A null pointer dereference in the soap_action function within the upnp binary can be triggered by an unauthenticated attacker via a malicious POST request invoking the AddPortMapping action.
Weakness: CWE-476
Which versions are affected by CVE-2022-43972?
It affects 1 product.
Products include Linksys Wrt54gl Firmware.
How do I fix CVE-2022-43972?
No fix has been published for CVE-2022-43972 yet. Limit exposure of the affected software until one is available.
Is CVE-2022-43972 being exploited?
There is no known exploitation of CVE-2022-43972 in the wild and no public exploit code.
Other vulnerabilities in Linksys WRT54GL Wireless-G Broadband Router
- CVE-2023-31742 Command injection in n/a
- CVE-2022-43970 Buffer overflow in Linksys WRT54GL
- CVE-2022-43973 Arbitrary code execution in Linksys WRT54GL
- CVE-2024-1405 Linksys WRT54GL Web Management Interface wlaninfo.htm information disclosure
- CVE-2024-1406 Linksys WRT54GL Web Management Interface SysInfo1.htm information disclosure
Sources
Also known as GHSA-2p3f-3cj6-r8vv.