CVE-2022-20705 in Small Business RV160
Summary
by MITRE • 02/10/2022
Multiple vulnerabilities in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker to do any of the following: Execute arbitrary code Elevate privileges Execute arbitrary commands Bypass authentication and authorization protections Fetch and run unsigned software Cause denial of service (DoS) For more information about these vulnerabilities, see the Details section of this advisory.
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Analysis
by VulDB Data Team • 06/21/2024
The CVE-2022-20705 vulnerability affects Cisco Small Business routers including RV160 RV260 RV340 and RV345 series devices which are widely deployed in small and medium business environments. These routers serve as critical network infrastructure components handling traffic routing authentication and security policies for corporate networks. The vulnerabilities stem from multiple software flaws in the affected router firmware that collectively create a comprehensive attack surface allowing adversaries to compromise the device's integrity and operational capabilities.
The technical flaws within these routers encompass several critical weaknesses including insufficient input validation mechanisms and improper access controls that enable attackers to exploit command injection vulnerabilities. The vulnerabilities allow unauthorized execution of arbitrary code through specially crafted network requests that bypass normal authentication procedures. Additionally the devices suffer from privilege escalation flaws that permit attackers to gain administrative access without proper credentials. These issues are particularly concerning because they affect the core network infrastructure components that should enforce strict security boundaries and access controls.
The operational impact of these vulnerabilities extends beyond simple privilege escalation to include complete system compromise capabilities. Attackers can execute arbitrary commands on the affected devices which means they can modify network configurations install malicious software, or completely disable network services. The ability to bypass authentication protections undermines the fundamental security model of these routers as they are designed to protect corporate networks from external threats. Furthermore the vulnerability enables attackers to fetch and run unsigned software which could allow the deployment of malware or backdoors that persist across device reboots and could compromise the entire network infrastructure.
The denial of service capabilities within these vulnerabilities pose additional operational risks as attackers can render the affected routers completely non-functional. This type of attack can cause significant business disruption when critical network services become unavailable and can be particularly damaging in environments where these routers serve as primary network gateways. The combination of these vulnerabilities creates a comprehensive attack vector that allows adversaries to move laterally within networks, establish persistent access, and potentially cause widespread service disruption.
Organizations should immediately implement mitigations including firmware updates from Cisco to address the identified vulnerabilities. Network segmentation should be implemented to limit access to these devices from untrusted networks and administrative access should be restricted to authorized personnel only. The use of network monitoring tools can help detect suspicious activities such as unauthorized configuration changes or unusual traffic patterns that might indicate exploitation attempts. Additionally implementing strong authentication mechanisms and regular security audits can help identify and remediate potential compromise scenarios.
This vulnerability aligns with several CWE categories including CWE-79 for input validation failures and CWE-284 for improper access control. From an ATT&CK perspective the vulnerabilities map to multiple tactics including privilege escalation T1068, command and control T1071, and defense evasion T1070. The attack surface represents a significant risk to small business networks where these devices are often deployed with minimal security monitoring and where the default configurations may not provide adequate protection against these types of attacks. Organizations should prioritize patch management and security assessments to ensure their network infrastructure remains protected against these and similar vulnerabilities that could compromise their operational security posture.