CVE-2021-1208 : Security Advisory and Response
Learn about CVE-2021-1208 impacting Cisco Small Business RV Series Routers, allowing remote attackers to execute arbitrary code or cause denial of service. Find out about the impact, technical details, and mitigation steps.
Cisco Small Business RV Series Routers are affected by multiple vulnerabilities that could allow an authenticated, remote attacker to execute arbitrary code or cause the device to restart unexpectedly. The vulnerabilities stem from improper validation of user input in the web-based management interface.
Understanding CVE-2021-1208
This CVE impacts Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers, potentially leading to remote command execution and denial of service attacks.
What is CVE-2021-1208?
Multiple vulnerabilities in the web-based management interface of the mentioned routers could be exploited by an attacker with valid credentials to execute arbitrary code or cause a denial of service.
The Impact of CVE-2021-1208
The vulnerabilities could allow an attacker to gain root-level access on the operating system or cause a device reload, resulting in a denial of service situation. Proper exploitation requires administrator credentials.
Technical Details of CVE-2021-1208
The following technical aspects need attention:
Vulnerability Description
The vulnerabilities result from inadequate user input validation in the web-based management interface.
Affected Systems and Versions
All Cisco Small Business RV Series Routers, including RV110W, RV130, RV130W, and RV215W, are vulnerable to these exploits.
Exploitation Mechanism
Crafted HTTP requests can trigger the vulnerabilities, enabling arbitrary code execution or device restart.
Mitigation and Prevention
To address CVE-2021-1208, consider the following measures:
Immediate Steps to Take
Ensure that only trusted users have administrator credentials. Monitor network traffic for suspicious HTTP requests.
Long-Term Security Practices
Regularly update firmware and security patches for the affected routers. Implement network segmentation to limit the impact of potential attacks.
Patching and Updates
Cisco is yet to release software updates that address these critical vulnerabilities in the Small Business RV Series Routers.