CVE-2022-20708 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.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 09/18/2024
The Cisco Small Business RV160 RV260 RV340 and RV345 Series Routers contain multiple critical vulnerabilities that collectively represent a significant threat to network security infrastructure. These devices are widely deployed in small business environments serving as primary network gateways and security appliances. The vulnerabilities span across several attack vectors including arbitrary code execution privilege escalation and authentication bypass mechanisms that could allow remote attackers to gain complete control over affected devices. The scope of impact is particularly concerning given the widespread adoption of these routers in enterprise and small business networks where they often serve as the first line of defense against external threats.
The technical flaw stems from insufficient input validation and authentication mechanisms within the router firmware. Attackers can exploit these weaknesses to execute arbitrary code on the affected devices without requiring legitimate credentials. The vulnerabilities enable privilege escalation allowing attackers to gain administrative access to the router's management interfaces. Additionally the routers fail to properly validate software updates and can be coerced into executing unsigned or malicious code. The authentication bypass capabilities mean that even if proper credentials are required for access the underlying authentication mechanisms can be circumvented through various exploitation techniques. These issues are particularly dangerous because they can be exploited remotely over the network without requiring physical access to the devices.
The operational impact of these vulnerabilities is severe and multifaceted. Once compromised attackers can establish persistent backdoors within the network infrastructure providing them with continuous access to the internal network. The ability to execute arbitrary commands allows attackers to modify router configurations redirect traffic or even create man-in-the-middle attacks against internal network communications. The denial of service capabilities can be used to disrupt network services completely affecting business operations. Furthermore the ability to fetch and run unsigned software creates a persistent threat vector where attackers can install malware or additional exploit tools directly on the router. This compromise essentially gives attackers complete control over the network perimeter and can serve as a launching point for further attacks within the internal network.
Mitigation strategies should include immediate firmware updates from Cisco addressing the identified vulnerabilities. Network administrators should implement network segmentation and monitoring to detect unauthorized access attempts. The principle of least privilege should be applied to router management interfaces with strong authentication mechanisms including multi-factor authentication. Regular security audits of router configurations should be performed to identify any unauthorized changes. Network traffic monitoring can help detect anomalous behavior indicative of exploitation attempts. The vulnerabilities align with CWE-20 Input Validation and CWE-264 Permissions and Access Control categories and map to attack techniques in the MITRE ATT&CK framework including privilege escalation T1068 and credential access T1078. Organizations should also consider implementing network access control measures and regular vulnerability scanning to prevent exploitation of these critical vulnerabilities.