CVE-2021-1177 : Vulnerability Insights and Analysis
Discover the impact and mitigation strategies for the CVE-2021-1177 vulnerability in Cisco Small Business RV Series Router Firmware. Learn how to secure your systems effectively.
This article discusses the CVE-2021-1177 vulnerability found in Cisco Small Business RV Series Router Firmware. It covers the impact, technical details, and mitigation strategies.
Understanding CVE-2021-1177
CVE-2021-1177 is a vulnerability existing in the web-based management interface of Cisco Small Business RV Series Routers, which could allow a remote attacker to execute arbitrary code or cause a denial of service attack.
What is CVE-2021-1177?
The vulnerability stems from inadequate validation of user-supplied input in the web-based management interface of Cisco Small Business RV Series Routers. An attacker with valid administrator credentials could exploit this to execute unauthorized code or prompt a device restart.
The Impact of CVE-2021-1177
The potential impacts of this vulnerability include allowing attackers to gain root access to the underlying operating system, leading to arbitrary code execution, or causing the affected device to reload unexpectedly, resulting in a denial of service situation.
Technical Details of CVE-2021-1177
This section delves into the specifics of the vulnerability.
Vulnerability Description
The vulnerability arises due to improper input validation in the web-based management interface, paving the way for remote code execution or device restart.
Affected Systems and Versions
The affected systems include Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers with specific firmware versions.
Exploitation Mechanism
By sending carefully crafted HTTP requests to an affected device, an attacker can exploit these vulnerabilities to execute malicious code or cause a denial of service incident.
Mitigation and Prevention
Protecting your systems against CVE-2021-1177 is crucial.
Immediate Steps to Take
Ensure that your web-based management interfaces are not directly exposed to the internet. If possible, restrict access to known IP addresses or utilize VPNs for remote access.
Long-Term Security Practices
Regularly monitor and update your router firmware to the latest versions provided by Cisco. Implement strong password policies and review access controls periodically.
Patching and Updates
Stay informed about security advisories from Cisco and apply patches promptly to safeguard your systems against potential exploits.