CVE-2022-43973 Arbitrary code execution in Linksys WRT54GL
An authenticated administrator can execute arbitrary root commands on Linksys WRT54GL routers via a malicious POST request due to unvalidated input in the Check_TSSI function.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-43973?
CVE-2022-43973 is a high-severity command injection vulnerability in Linksys WRT54GL Wireless-G Broadband Router, published on 9 Jan 2023. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
An arbitrary code execution vulnerability exisits in Linksys WRT54GL Wireless-G Broadband Router with firmware <= 4.30.18.006. The Check_TSSI function within the httpd binary uses unvalidated user input in the construction of a system command. An authenticated attacker with administrator privileges can leverage this vulnerability over the network via a malicious POST request to /apply.cgi to execute arbitrary commands on the underlying Linux operating system as root.
Weakness: CWE-78
Which versions are affected by CVE-2022-43973?
It affects 1 product.
Products include Linksys Wrt54gl Firmware.
How do I fix CVE-2022-43973?
No fix has been published for CVE-2022-43973 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2022-43973 being exploited?
There is no known exploitation of CVE-2022-43973 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
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-2022-43972 Null pointer dereference 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-j637-xgw5-6q5c.