Advisory Details

February 22nd, 2022

(Pwn2Own) Cisco RV340 confd_cli Unnecessary Privileges Local Privilege Escalation Vulnerability

ZDI-22-412
ZDI-CAN-15886

CVE ID CVE-2022-20701
CVSS SCORE 7.8, AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS Cisco
AFFECTED PRODUCTS RV340
VULNERABILITY DETAILS

This vulnerability allows local attackers to escalate privileges on affected installations of Cisco RV340 routers. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within confd_cli. The issue results from executing user commands at an unnecessarily high privilege level. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary 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
  • 2022-01-26 - Vulnerability reported to vendor
  • 2022-02-22 - Coordinated public release of advisory
CREDIT Benjamin Grap, Hanno Heinrichs and Lukas Kupczyk of CrowdStrike Intelligence
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