Vulnerability identifier: #VU22600

Vulnerability risk: High

CVSSv3.1: 8.4 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2019-15271

CWE-ID: CWE-502

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

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data in the web-based management interface. A remote authenticated attacker can send a specially crafted HTTP request to the targeted device 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 - 4.2.3.09

Cisco RV042 Dual WAN VPN Router: 4.1.0.02 tm - 4.2.3.09

Cisco RV042G Dual Gigabit WAN VPN Router: 4.2.1.02 - 4.2.8.08

Cisco RV082 Dual WAN VPN Router: 1.3.9.8 tm - 4.2.3.09

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191106-sbrv-cmd-x

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.