Vulnerability identifier: #VU62807

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-2022-20753

CWE-ID: CWE-121

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 code on the target system.

The vulnerability exists due to a boundary error in web-based management interface when handling set-snmp JSON RPC requests. A remote administrator can trigger stack-based buffer overflow and execute arbitrary code 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-sbrv-rce-OYLQbL9u
http://www.zerodayinitiative.com/advisories/ZDI-22-756/
http://www.zerodayinitiative.com/advisories/ZDI-22-803/
http://www.zerodayinitiative.com/advisories/ZDI-22-802/

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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.