CVE-2023-20147 : Vulnerability Insights and Analysis

This CVE involves multiple vulnerabilities in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, RV082, RV320, and RV325 Routers that could potentially allow an unauthenticated, remote attacker to carry out cross-site scripting (XSS) attacks, posing a risk to users of these routers.

Understanding CVE-2023-20147

This CVE pertains to cross-site scripting vulnerabilities found in a range of Cisco Small Business RV Series Routers, making it possible for attackers to execute script code in the context of the affected interface or access sensitive browser-based data.

What is CVE-2023-20147?

The vulnerability originates from inadequate input validation in the web-based management interface of the affected Cisco routers. Attackers can exploit this flaw by sending specially-crafted HTTP requests to the devices and tricking users into visiting malicious web pages containing harmful payloads.

The Impact of CVE-2023-20147

If successfully exploited, this vulnerability could lead to the execution of arbitrary script code within the affected interface or access to critical browser-based information, putting user data and system integrity at risk.

Technical Details of CVE-2023-20147

This vulnerability is classified under CWE-79 and has a CVSSv3.1 base score of 6.1, indicating a medium severity level. The attack vector is through the network, requiring no privileges and some level of user interaction. The impact includes low confidentiality and integrity impacts with no availability impact.

Vulnerability Description

The vulnerabilities in the web-based management interface of the affected Cisco routers stem from a lack of proper input validation, allowing for XSS attacks that could compromise user information and system security.

Affected Systems and Versions

The specific systems impacted by CVE-2023-20147 are the Cisco Small Business RV Series Router Firmware. The affected versions were not specified in the data.

Exploitation Mechanism

To exploit these vulnerabilities, attackers need to send crafted HTTP requests to the vulnerable routers and then convince users to visit web pages containing malicious code, leading to the execution of arbitrary scripts or unauthorized access to sensitive information.

Mitigation and Prevention

To address CVE-2023-20147 and protect systems from potential exploitation, users are advised to take immediate action while also implementing long-term security practices to enhance overall cybersecurity posture.

Immediate Steps to Take

Ensure the web-based management interface of Cisco routers is not accessible from untrusted networks.
Regularly monitor for security advisories and updates from Cisco to mitigate known vulnerabilities.

Long-Term Security Practices

Implement network segmentation to limit access to critical systems.
Train users on recognizing and avoiding potential phishing attempts or malicious websites.

Patching and Updates

Since Cisco has not released specific software updates to address these vulnerabilities yet, users are advised to stay vigilant, follow security best practices, and apply patches promptly once they become available.