(Pwn2Own) Cisco RV340 Firmware Update Missing Integrity Check Remote Code Execution Vulnerability
Vulnerability Details
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Cisco RV340 routers. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of firmware updates. The issue results from the lack of proper validation of a firmware image when performing an upgrade. An attacker can leverage this vulnerability to execute code in the context of root.
Additional Details
Cisco has issued an update to correct this vulnerability. More details can be found at:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-smb-mult-vuln-KA9PK6D
Disclosure Timeline
- 2021-11-24 - Vulnerability reported to vendor
- 2022-02-22 - Coordinated public release of advisory
Credit
Bien Pham (@bienpnn) from Team Orca of Sea Security (security.sea.com)
