#VU51553 Stack-based buffer overflow in RV132W ADSL2+ Wireless-N VPN Router and RV134W VDSL2 Wireless-AC VPN Router - CVE-2021-1287

Vulnerability identifier: #VU51553

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-2021-1287

CWE-ID: CWE-121

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
RV132W ADSL2+ Wireless-N VPN Router
Hardware solutions / Routers & switches, VoIP, GSM, etc
RV134W VDSL2 Wireless-AC 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 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

RV132W ADSL2+ Wireless-N VPN Router: before 1.0.1.15

RV134W VDSL2 Wireless-AC VPN Router: before 1.0.1.21

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External links
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-132w134w-overflow-Pptt4H2p

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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.