Vulnerability identifier: #VU66107

Vulnerability risk: High

CVSSv3.1: 7.8 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-20841

CWE-ID: CWE-77

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco Small Business RV160 Series VPN Router
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Small Business RV160W Wireless-AC VPN Router
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Small Business RV260 VPN Router
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Small Business RV260P VPN Router with POE
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Small Business RV260W Wireless-AC VPN Router
Hardware solutions / Routers & switches, VoIP, GSM, etc
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 attacker to execute arbitrary commands on the target system.

The vulnerability exists due to improper input validation in the Open Plug and Play (PnP) module. A remote unauthenticated attacker can pass specially crafted data to the application and execute arbitrary commands on the target system with root privileges.

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

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cisco Small Business RV160 Series VPN Router: 1.0.01.05

Cisco Small Business RV160W Wireless-AC VPN Router: 1.0.01.05

Cisco Small Business RV260 VPN Router: 1.0.01.05

Cisco Small Business RV260P VPN Router with POE: 1.0.01.05

Cisco Small Business RV260W Wireless-AC VPN Router: 1.0.01.05

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-sb-mult-vuln-CbVp4SUR

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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