#VU49634 Stack-based buffer overflow in Cisco Systems, Inc products - CVE-2021-1186

Vulnerability identifier: #VU49634

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-2021-1186

CWE-ID: CWE-121

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
RV110W Wireless-N VPN Firewall
Hardware solutions / Routers for home users
Cisco Small Business RV130 Series VPN Routers
Hardware solutions / Routers for home users
RV130W Wireless-N Multifunction VPN Router
Hardware solutions / Routers for home users
RV215W Wireless-N VPN Router
Hardware solutions / Routers for home users

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 specially crafted HTTP requests, trigger stack-based buffer overflow and execute arbitrary code on the target system or cause a denial of service (DoS) condition.

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

Vulnerable software versions

RV110W Wireless-N VPN Firewall: 1.2.2.8 - 1.3.1.7

Cisco Small Business RV130 Series VPN Routers: 1.2.2.8 - 1.3.1.7

RV130W Wireless-N Multifunction VPN Router: 1.2.2.8 - 1.3.1.7

RV215W Wireless-N VPN Router: 1.2.2.8 - 1.3.1.7

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External links
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-overflow-WUnUgv4U

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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.