#VU29272 Buffer overflow in Cisco Systems, Inc products - CVE-2020-3290

Vulnerability identifier: #VU29272

Vulnerability risk: Low

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-3290

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco RV016 Multi-WAN VPN Router
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco RV042 Dual WAN VPN Router
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco RV042G Dual Gigabit WAN VPN Router
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco RV082 Dual WAN VPN Router
Hardware solutions / Routers & switches, VoIP, GSM, etc
Small Business RV320 Dual Gigabit WAN VPN Router
Hardware solutions / Routers & switches, VoIP, GSM, etc
Small Business RV325 Dual Gigabit WAN 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 the web-based management interface. A remote administrator can send a specially crafted request, trigger memory corruption 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 RV016 Multi-WAN VPN Router: 3.0.0.1 tm - 4.2.3.10

Cisco RV042 Dual WAN VPN Router: 4.1.0.02 tm - 4.2.3.10

Cisco RV042G Dual Gigabit WAN VPN Router: 4.2.1.02 - 4.2.3.10

Cisco RV082 Dual WAN VPN Router: 1.3.9.8 tm - 4.2.3.10

Small Business RV320 Dual Gigabit WAN VPN Router: 1.5.1.05

Small Business RV325 Dual Gigabit WAN VPN Router: 1.5.1.05

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External links
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-routers-stack-vUxHmnNz

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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.