CVE-2021-1333 : Security Advisory and Response

Cisco Small Business RV Series routers are affected by multiple vulnerabilities in their web-based management interface. These vulnerabilities could allow a remote attacker to execute arbitrary code or disrupt the device's operations. Here is what you need to know about CVE-2021-1333.

Understanding CVE-2021-1333

CVE-2021-1333 pertains to multiple vulnerabilities in the web-based management interface of Cisco Small Business RV Series routers that could be exploited by an authenticated remote attacker to execute malicious code or trigger unexpected restarts.

What is CVE-2021-1333?

The CVE-2021-1333 vulnerability involves improper validation of user inputs in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, RV082, RV320, and RV325 Routers. Attackers could send specially crafted HTTP requests to exploit these vulnerabilities, potentially leading to unauthorized code execution or denial of service (DoS) attacks.

The Impact of CVE-2021-1333

The impact of CVE-2021-1333 is significant, with a base severity score of 7.2 out of 10. Successful exploitation could result in arbitrary code execution with high privileges, causing system instability and potential unauthorized access to the device.

Technical Details of CVE-2021-1333

The technical details of CVE-2021-1333 shed light on the vulnerability description, affected systems, versions, and the exploitation mechanism.

Vulnerability Description

The vulnerabilities in the Cisco Small Business RV Series routers arise from inadequate validation of user-supplied inputs in the web-based management interface, opening a gateway for attackers to manipulate systems and execute malicious actions.

Affected Systems and Versions

The affected systems include Cisco Small Business RV016, RV042, RV042G, RV082, RV320, and RV325 Routers. The versions impacted are not applicable (n/a).

Exploitation Mechanism

To exploit CVE-2021-1333, attackers must send manipulated HTTP requests to vulnerable devices, leveraging improper input validation to execute arbitrary code, potentially gaining root-level access or causing the device to crash.

Mitigation and Prevention

Mitigating CVE-2021-1333 requires immediate action and the implementation of security best practices to safeguard network infrastructure.

Immediate Steps to Take

Immediately apply any available patches or updates from Cisco to address the vulnerabilities in the Small Business RV Series routers. Regularly monitor for security advisories and ensure network administrators are aware of potential threats.

Long-Term Security Practices

Develop a comprehensive security policy that includes regular security audits, employee training on cybersecurity best practices, and network segmentation to contain potential breaches.

Patching and Updates

Stay informed about security updates and patches released by Cisco for the affected RV Series routers. Promptly apply these updates to eliminate known vulnerabilities and enhance the security posture of your network.