CVE-2021-28961 Explained : Impact and Mitigation
Understand the impact of CVE-2021-28961, a vulnerability in OpenWrt 19.07 allowing remote authenticated users to execute arbitrary commands. Learn about mitigation strategies and security best practices.
A detailed overview of CVE-2021-28961 focusing on the vulnerability in the DDNS package for OpenWrt 19.07 that allows remote authenticated users to inject arbitrary commands via POST requests.
Understanding CVE-2021-28961
This section provides insights into the impact, technical details, and mitigation strategies related to CVE-2021-28961.
What is CVE-2021-28961?
The vulnerability in the DDNS package for OpenWrt 19.07 enables remote authenticated users to execute arbitrary commands through POST requests, posing a security risk.
The Impact of CVE-2021-28961
The exploitation of this vulnerability may lead to unauthorized command execution by attackers with authenticated access, potentially compromising the integrity and confidentiality of the affected systems.
Technical Details of CVE-2021-28961
Explore the specific aspects of the vulnerability such as the description, affected systems, versions, and exploitation mechanism.
Vulnerability Description
The flaw in applications/luci-app-ddns/luasrc/model/cbi/ddns/detail.lua in the DDNS package allows attackers to inject malicious commands by sending crafted POST requests.
Affected Systems and Versions
The issue impacts OpenWrt 19.07 installations, putting systems using this specific version at risk of command injection by authenticated remote users.
Exploitation Mechanism
By leveraging the vulnerability in the DDNS package, remote authenticated users can abuse POST requests to execute arbitrary commands on the target system, bypassing security mechanisms.
Mitigation and Prevention
Learn how to address the CVE-2021-28961 vulnerability effectively and safeguard your systems.
Immediate Steps to Take
To mitigate the risk, users are advised to apply security patches promptly, restrict network access to vulnerable services, and monitor for any suspicious activities.
Long-Term Security Practices
Implementing access control mechanisms, conducting regular security audits, and staying informed about security advisories can enhance the overall security posture and prevent future vulnerabilities.
Patching and Updates
Stay up-to-date with security updates from OpenWrt, including patches that address CVE-2021-28961 and other known vulnerabilities.