ZDI-21-559: Cisco RV340 set_snmp usmUserPrivKey Command Injection Remote Code Execution Vulnerability
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Cisco RV340 routers. Authentication is required to exploit this vulnerability. The specific flaw exists within the processing of JSON-RPC requests. When parsing the usmUserPrivKey property, the process does not properly validate a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the www-data user.
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-21-559?
The severity of ZDI-21-559 is high due to its potential for remote code execution.
How do I fix ZDI-21-559?
To fix ZDI-21-559, update your Cisco RV340 router firmware to the latest version provided by Cisco.
Who is affected by ZDI-21-559?
ZDI-21-559 affects installations of Cisco RV340 routers that have not been updated.
Can ZDI-21-559 be exploited remotely?
ZDI-21-559 requires authentication, but it can be exploited by network-adjacent attackers.
What type of vulnerability is ZDI-21-559?
ZDI-21-559 is a remote code execution vulnerability found in the JSON-RPC request processing of Cisco RV340 routers.