CVE-2021-1149 : Exploit Details and Defense Strategies

Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers pose a significant threat. An attacker could exploit these vulnerabilities to execute arbitrary commands with root privileges. Find out more about the impact, technical details, and mitigation strategies below.

Understanding CVE-2021-1149

This CVE identifies vulnerabilities in the Cisco Small Business RV Series Router Firmware that allow an authenticated attacker to inject arbitrary commands with root privileges through the web-based management interface.

What is CVE-2021-1149?

The CVE-2021-1149 vulnerability allows a remote attacker to send crafted HTTP requests to the affected devices, enabling the execution of arbitrary code as the root user on the underlying operating system.

The Impact of CVE-2021-1149

The impact of this vulnerability is rated as HIGH, with a CVSS base score of 7.2. It could result in unauthorized access, data confidentiality breaches, integrity compromises, and disruptions to system availability.

Technical Details of CVE-2021-1149

The following technical details shed light on the vulnerability, affected systems, and exploitation mechanisms.

Vulnerability Description

The vulnerability is caused by improper validation of user-supplied input in the web-based management interface, leading to command injection. Attackers with valid administrator credentials can exploit this to gain root access.

Affected Systems and Versions

The Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers are affected by this vulnerability, running the Cisco Small Business RV Series Router Firmware.

Exploitation Mechanism

By sending malicious HTTP requests to a targeted device, an attacker can inject arbitrary commands and execute them with root privileges.

Mitigation and Prevention

Discover the immediate steps to take and the long-term security practices to implement to mitigate the risks posed by CVE-2021-1149.

Immediate Steps to Take

It is crucial to ensure that all administrator credentials for the affected devices are strong and secure. Additionally, restrict network access to authorized users only.

Long-Term Security Practices

Regularly monitor for security updates from Cisco and apply patches promptly to address known vulnerabilities. Conduct regular security assessments and train personnel on best security practices.

Patching and Updates

Cisco has not yet released software updates to address these vulnerabilities. It is recommended to stay informed about security advisories and apply patches as soon as they are made available.