Vulnerability identifier: #VU60251

Vulnerability risk: Medium

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-20704

CWE-ID: CWE-295

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 attacker to perform MitM attack.

The vulnerability exists due to improper validation of the TLS server certificate that is received when establishing a connection to specific remote servers. A remote attacker can view or alter information that is shared between an affected device and specific Cisco servers , e.g. cloudsso.cisco.com and api.cisco.com.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cisco RV340 Dual WAN Gigabit VPN Router: 1.0.0.33 - 1.0.3.17

Cisco RV340W Dual WAN Gigabit Wireless-AC VPN Router: 1.0.01.16 - 1.0.03.24

Cisco RV345 Dual WAN Gigabit VPN Router: 1.0.0.33 - 1.0.3.17

Cisco RV345P Dual WAN Gigabit VPN Router: 1.0.0.33 - 1.0.1.16

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-smb-mult-vuln-KA9PK6D

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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.