#VU50318 Code Injection in Cisco Systems, Inc products - CVE-2021-1289

Vulnerability identifier: #VU50318

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-1289

CWE-ID: CWE-94

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco Small Business RV160 Series VPN Router
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Small Business RV160W Wireless-AC VPN Router
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Small Business RV260 VPN Router
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Small Business RV260P VPN Router with POE
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Small Business RV260W Wireless-AC 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 the HTTP requests are not properly validated. A remote attacker can send a specially crafted HTTP request 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 Small Business RV160 Series VPN Router: before 1.0.01.02

Cisco Small Business RV160W Wireless-AC VPN Router: before 1.0.01.02

Cisco Small Business RV260 VPN Router: before 1.0.01.02

Cisco Small Business RV260P VPN Router with POE: before 1.0.01.02

Cisco Small Business RV260W Wireless-AC VPN Router: before 1.0.01.02

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External links
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv160-260-rce-XZeFkNHf
https://www.zerodayinitiative.com/advisories/ZDI-21-152/

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.