CVE-2021-1294: Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers could allow an…

PriorityP272critical9.8CVSS 3.1

AVNACLPRNUINSUCHIHAH

EPSS

4.18%

89.7th percentile

Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers could allow an unauthenticated, remote attacker to execute arbitrary code as the root user on an affected device. These vulnerabilities exist because HTTP requests are not properly validated. An attacker could exploit these vulnerabilities by sending a crafted HTTP request to the web-based management interface of an affected device. A successful exploit could allow the attacker to remotely execute arbitrary code on the device.

Affected

7 ranges

Vendor	Product	Version range	Fixed in
cisco	cisco_small_business_rv_series_router_firmware	—	—
cisco	rv160_vpn_router_firmware	< 1.0.01.02	1.0.01.02
cisco	rv160w_wireless-ac_vpn_router_firmware	< 1.0.01.02	1.0.01.02
cisco	rv260_vpn_router_firmware	< 1.0.01.02	1.0.01.02
cisco	rv260p_vpn_router_with_poe_firmware	< 1.0.01.02	1.0.01.02
cisco	rv260w_wireless-ac_vpn_router_firmware	< 1.0.01.02	1.0.01.02
cisco	small_business_rv160_rv160w_rv260_rv260p_and_rv260w_vpn_routers	—	—

Detection & IOCsextracted from sources · hover to see the quote

→Exploit vector is a crafted HTTP request to the web-based management interface of affected Cisco Small Business RV160/RV260 series routers; monitor for anomalous or malformed HTTP requests targeting the management interface from unauthenticated sources. ↗
→Successful exploitation results in remote code execution as root; look for unexpected root-level process spawning from the web server process on affected Cisco RV160/RV260 devices. ↗
→The vulnerability class is improper validation of HTTP requests (CWE-472); inspect HTTP requests to the management interface for unexpected or unsanitized input that may indicate exploitation attempts. ↗

·Affected devices are Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers; ensure detection rules are scoped to these specific device models. ↗
·The attacker requires no authentication to exploit this vulnerability; perimeter controls blocking unauthenticated access to the management interface are a critical mitigation. ↗

CVSS provenance

nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvdv2.010.0CRITICALAV:N/AC:L/Au:N/C:C/I:C/A:C

vendor_cisco9.8CRITICAL

vendor_redhat5.5MEDIUM

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