CVE-2022-20699 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-2022-20699 vulnerability affects Cisco Small Business routers including the RV160, RV260, RV340, and RV345 series models, 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 compromise network infrastructure. The vulnerability stems from insufficient input validation and authentication mechanisms within the router firmware, creating pathways for attackers to exploit the devices through various means including remote code execution and privilege escalation.
The technical implementation of this vulnerability involves multiple attack surfaces that allow adversaries to manipulate the router's operating system through malformed inputs or by exploiting weaknesses in the authentication protocols. Attackers can leverage these flaws to execute arbitrary code on the affected devices, which provides them with a foothold to escalate privileges and gain deeper access to the network infrastructure. The vulnerability also enables command execution capabilities that allow attackers to run arbitrary commands on the router, potentially leading to complete system compromise. Furthermore, the authentication bypass mechanisms permit unauthorized access to administrative functions, effectively allowing attackers to manipulate router configurations without proper credentials.
The operational impact of CVE-2022-20699 extends beyond simple unauthorized access, as the vulnerability can be exploited to download and execute unsigned software on the affected devices. This capability allows attackers to install malicious firmware or applications that can persist across reboots, creating long-term access points within the network. The potential for denial of service attacks represents another significant concern, as attackers can cause the routers to become unresponsive or crash entirely, disrupting network connectivity for legitimate users. This vulnerability directly relates to CWE-20, which addresses improper input validation, and CWE-264, which covers permissions, privileges, and access controls, both of which are fundamental security principles that should be enforced within network infrastructure devices.
Network administrators and security professionals should immediately implement mitigation strategies including firmware updates from Cisco to address the identified vulnerabilities, as well as network segmentation to limit the potential impact of any successful exploitation. Additional protective measures include disabling unnecessary services, implementing strong authentication mechanisms, and monitoring network traffic for signs of exploitation attempts. The vulnerability demonstrates the importance of maintaining up-to-date firmware and following security best practices as outlined in the MITRE ATT&CK framework, particularly focusing on the privilege escalation and persistence techniques that attackers can employ through such vulnerabilities. Organizations should also consider implementing network monitoring solutions that can detect anomalous behavior patterns indicative of router compromise, as these devices often serve as critical network entry points that require continuous security oversight.