Arbitrary file upload in Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers

1) Arbitrary file upload

EUVDB-ID: #VU71741

Risk: Medium

CVSSv4.0: 7.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2023-20073

CWE-ID: CWE-434 - Unrestricted Upload of File with Dangerous Type

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to upload arbitrary files to an affected device.

The vulnerability exists due to insufficient validation of file during file upload. A remote attacker can upload arbitrary files to an affected device.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Cisco RV340 Dual WAN Gigabit VPN Router: 1.0.0.33 - 1.0.03.29

Cisco RV340W Dual WAN Gigabit Wireless-AC VPN Router: 1.0.01.16 - 1.0.03.29

Cisco RV345 Dual WAN Gigabit VPN Router: 1.0.0.33 - 1.0.03.29

Cisco RV345P Dual WAN Gigabit VPN Router: 1.0.0.33 - 1.0.03.29

CPE2.3

• cpe:2.3:h:cisco_systems:cisco_rv340_dual_wan_gigabit_vpn_router:1.0.0.33:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:cisco_rv340_dual_wan_gigabit_vpn_router:1.0.00.33:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:cisco_rv340_dual_wan_gigabit_vpn_router:1.0.1.16:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:cisco_rv340w_dual_wan_gigabit_wireless-ac_vpn_router:1.0.01.16:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:cisco_rv340w_dual_wan_gigabit_wireless-ac_vpn_router:1.0.01.17:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:cisco_rv340w_dual_wan_gigabit_wireless-ac_vpn_router:1.0.01.18:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:cisco_rv345_dual_wan_gigabit_vpn_router:1.0.0.33:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:cisco_rv345_dual_wan_gigabit_vpn_router:1.0.1.16:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:cisco_rv345_dual_wan_gigabit_vpn_router:1.0.3.17:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:cisco_rv345p_dual_wan_gigabit_vpn_router:1.0.0.33:*:*:*:*:*:*:*

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-rv-afu-EXxwA65V
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwe04040

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.