CVE-2021-1157 : Vulnerability Insights and Analysis
Learn about CVE-2021-1157 affecting Cisco Small Business RV Series Routers. Follow mitigation steps to prevent cross-site scripting attacks. Stay secure with firmware updates.
Cisco Small Business RV Series Routers are affected by multiple vulnerabilities in their web-based management interface. An authenticated remote attacker could exploit these vulnerabilities to conduct cross-site scripting attacks, potentially executing arbitrary code or accessing sensitive information.
Understanding CVE-2021-1157
This CVE details stored cross-site scripting vulnerabilities in Cisco Small Business RV Series Routers.
What is CVE-2021-1157?
Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers are prone to cross-site scripting vulnerabilities due to inadequate input validation in the web-based management interface.
The Impact of CVE-2021-1157
An attacker with valid administrator credentials could execute cross-site scripting attacks, leading to arbitrary script code execution within the affected interface, or unauthorized access to confidential browser-based data.
Technical Details of CVE-2021-1157
This section outlines key technical aspects of the CVE.
Vulnerability Description
The vulnerabilities in the web-based management interface allow attackers to inject and execute arbitrary script code by sending specially crafted HTTP requests.
Affected Systems and Versions
The affected products include Cisco Small Business RV Series Router Firmware with the specific versions noted in the advisory.
Exploitation Mechanism
To exploit these vulnerabilities, an attacker needs valid administrator credentials to send malicious requests to the affected device, triggering cross-site scripting attacks.
Mitigation and Prevention
Protecting your systems from CVE-2021-1157 requires immediate actions and long-term security practices.
Immediate Steps to Take
Administrators should ensure they apply security patches promptly, restrict network access to the management interface, and review system logs for any signs of unauthorized access.
Long-Term Security Practices
Regularly update firmware, configure secure network settings, monitor network traffic for anomalies, and provide cybersecurity awareness training to prevent future attacks.
Patching and Updates
Visit the official Cisco Security Advisory (link provided in References) for detailed information on patches and updates.