CVE-2021-1338 : Security Advisory and Response
Learn about CVE-2021-1338, multiple vulnerabilities in Cisco Small Business RV Series Routers' web-based management interface, enabling remote code execution or restart of devices. Discover mitigation steps and security practices.
A detailed overview of multiple vulnerabilities in the web-based management interface of Cisco Small Business RV Series Routers, allowing remote code execution or unexpected device restart.
Understanding CVE-2021-1338
This CVE involves a series of vulnerabilities that could be exploited by authenticated, remote attackers to compromise the affected Cisco Small Business RV Series Routers.
What is CVE-2021-1338?
The CVE-2021-1338 involves multiple vulnerabilities in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, RV082, RV320, and RV325 Routers. These vulnerabilities stem from improper validation of user input, enabling attackers to execute arbitrary code or cause denial of service through crafted HTTP requests.
The Impact of CVE-2021-1338
The impact of CVE-2021-1338 is significant, as successful exploitation could allow attackers to gain root access to the underlying operating system, leading to arbitrary code execution or device reload, resulting in a denial of service condition.
Technical Details of CVE-2021-1338
This section covers key technical details related to the CVE.
Vulnerability Description
The vulnerability arises from improper validation of user input in the web-based management interface, potentially leading to remote code execution or device restart.
Affected Systems and Versions
The affected systems include Cisco Small Business RV016, RV042, RV042G, RV082, RV320, and RV325 Routers. All versions are impacted.
Exploitation Mechanism
Attackers can exploit this vulnerability by sending crafted HTTP requests to the affected device, requiring valid administrator credentials for successful exploitation.
Mitigation and Prevention
Outlined are essential steps to mitigate and prevent exploitation of CVE-2021-1338.
Immediate Steps to Take
Immediately apply the necessary security updates provided by Cisco to address the vulnerabilities in the web-based management interface of the affected routers.
Long-Term Security Practices
Ensure robust security practices are in place, including regular security assessments, network segmentation, and least privilege access controls.
Patching and Updates
Regularly monitor for security updates and patches released by Cisco for the Small Business RV Series Routers to address any newly discovered vulnerabilities.