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 | Affected Version | How to fix |
|---|---|---|
| Cisco RV340W Firmware |
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Reference Links
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.
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- alias/ZDI-21-559
- alias/ZDI-CAN-11798
- alias/CVE-2021-1414
- agent/software-canonical-lookup
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- canonical/cisco rv340w firmware