CVE-2021-1155 : What You Need to Know
Learn about CVE-2021-1155 affecting Cisco Small Business RV Series Routers. Understand the XSS vulnerabilities, impact, exploitation, and mitigation steps to secure your systems.
Cisco Small Business RV Series Routers are prone to stored cross-site scripting (XSS) vulnerabilities in the web-based management interface. An attacker with valid credentials could exploit these flaws to conduct XSS attacks.
Understanding CVE-2021-1155
This CVE identifies multiple vulnerabilities in the Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers' web-based management interfaces.
What is CVE-2021-1155?
The vulnerabilities allow authenticated remote attackers to execute cross-site scripting (XSS) attacks by manipulating HTTP requests.
The Impact of CVE-2021-1155
A successful exploit could enable attackers to run arbitrary script code in the context of the affected interface or access sensitive browser-based information.
Technical Details of CVE-2021-1155
The vulnerabilities are a result of insufficient input validation by the affected devices' web interfaces.
Vulnerability Description
The flaw allows attackers to inject malicious scripts into the interface, potentially compromising user data or executing unauthorized actions.
Affected Systems and Versions
The vulnerabilities impact Cisco Small Business RV Series Router Firmware across all versions.
Exploitation Mechanism
Attackers send crafted HTTP requests to exploit the flaws, requiring valid administrator credentials for successful attacks.
Mitigation and Prevention
To secure your systems, take immediate steps and adopt long-term security practices.
Immediate Steps to Take
Ensure network administrators are aware of the issue and monitor for any unusual activities.
Long-Term Security Practices
Regularly update router firmware and implement network segmentation to minimize attack surfaces.
Patching and Updates
Stay informed about security advisories from Cisco and promptly apply recommended patches.