CVE-2022-20701 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 • 09/18/2024
The CVE-2022-20701 vulnerability affects Cisco Small Business routers including the RV160, RV260, RV340, and RV345 series, representing a critical security flaw that exposes these network devices to multiple attack vectors. These routers are commonly deployed in small business environments where they serve as primary network gateways, making them attractive targets for cybercriminals seeking to establish persistent access to corporate networks. The vulnerabilities stem from inadequate input validation and authentication mechanisms within the router firmware, creating pathways for unauthorized users to exploit the devices through various methods including code execution and privilege escalation. This issue directly impacts the integrity and confidentiality of network communications, as attackers can bypass standard security protections and gain administrative access to the affected devices.
The technical implementation of these vulnerabilities involves multiple attack surfaces that allow for arbitrary code execution and command injection within the router's operating environment. The flaws likely reside in the web-based management interface and command processing mechanisms, where insufficient sanitization of user inputs enables attackers to inject malicious code that executes with elevated privileges. According to CWE classification, these issues map to multiple weakness categories including CWE-79 for cross-site scripting, CWE-20 for input validation failures, and CWE-264 for permissions, privileges, and access control violations. The attack surface is particularly concerning given that these routers often operate without proper network segmentation, allowing attackers who compromise one device to potentially move laterally throughout the network infrastructure.
The operational impact of CVE-2022-20701 extends beyond simple unauthorized access, as the vulnerabilities provide attackers with complete control over affected routers, enabling them to modify network configurations, redirect traffic, and establish backdoor access points. This capability directly aligns with ATT&CK techniques categorized under privilege escalation and persistence, where adversaries can maintain long-term access to target networks. The ability to execute arbitrary commands allows threat actors to install malware, modify routing tables, and potentially create man-in-the-middle attack scenarios that can compromise all network traffic. Organizations using these routers face significant risk of data breaches, network disruption, and potential regulatory compliance violations, particularly in industries subject to strict cybersecurity requirements such as healthcare, finance, and government sectors.
Mitigation strategies for CVE-2022-20701 should prioritize immediate firmware updates from Cisco, which address the underlying validation and authentication flaws. Network administrators must also implement additional security controls including disabling unnecessary services, restricting remote management access to specific IP addresses, and implementing network monitoring to detect anomalous traffic patterns. The principle of least privilege should be enforced by ensuring that only authorized personnel have access to router management interfaces, and multi-factor authentication should be implemented where possible. Organizations should conduct thorough network assessments to identify all affected devices and establish incident response procedures that include rapid device isolation and forensic analysis capabilities. Regular vulnerability scanning and penetration testing should be performed to identify similar weaknesses in other network infrastructure components, while network segmentation can help limit the potential impact of successful attacks on these vulnerable routers.