Advisory Details

February 22nd, 2022

(Pwn2Own) Cisco RV340 Plug and Play Command Injection Remote Code Execution Vulnerability

ZDI-22-418
ZDI-CAN-15774

CVE ID CVE-2022-20706
CVSS SCORE 9.8, AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS Cisco
AFFECTED PRODUCTS RV340
VULNERABILITY DETAILS

This vulnerability allows remote 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 user-supplied string before using it to execute a system call. 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
  • 2021-12-01 - Vulnerability reported to vendor
  • 2022-02-22 - Coordinated public release of advisory
CREDIT trichimtrich and nyancat0131
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