Vulnerability identifier: #VU62806

Vulnerability risk: Low

CVSSv3.1: 6.3 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-20801

CWE-ID: CWE-77

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco RV340 Dual WAN Gigabit VPN Router
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco RV340W Dual WAN Gigabit Wireless-AC VPN Router
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco RV345 Dual WAN Gigabit VPN Router
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco RV345P Dual WAN Gigabit VPN Router
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a remote user to execute arbitrary commands on the target system.

The vulnerability exists due to improper input validation in the web-based management interface when parsing the usmUserPrivKey and usmUserAuthKey parameters in set-snmp JSON RPC requests. A remote administrator can pass specially crafted data to the application and execute arbitrary commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cisco RV340 Dual WAN Gigabit VPN Router: 1.0.03.26

Cisco RV340W Dual WAN Gigabit Wireless-AC VPN Router: 1.0.03.26

Cisco RV345 Dual WAN Gigabit VPN Router: 1.0.03.26

Cisco RV345P Dual WAN Gigabit VPN Router: 1.0.03.26

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-smb-rv-cmd-inj-8Pv9JMJD
http://www.zerodayinitiative.com/advisories/ZDI-22-723/
http://www.zerodayinitiative.com/advisories/ZDI-22-724/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.