CVE-2021-3512 : Vulnerability Insights and Analysis
Discover the critical CVE-2021-3512 affecting Buffalo broadband routers, allowing remote unauthenticated attackers to execute OS commands with root privileges.
An improper access control vulnerability has been identified in Buffalo broadband routers which allows remote unauthenticated attackers to execute arbitrary OS commands with root privileges.
Understanding CVE-2021-3512
This CVE identifies a critical security flaw in Buffalo broadband routers that could be exploited by remote attackers.
What is CVE-2021-3512?
The vulnerability in Buffalo broadband routers permits remote unauthenticated attackers to bypass access restrictions, activate telnet service, and run arbitrary OS commands with root privileges through unspecified vectors.
The Impact of CVE-2021-3512
The impact of this vulnerability is severe as attackers can gain unauthorized access to the routers and execute malicious commands, potentially compromising the entire network.
Technical Details of CVE-2021-3512
This section provides a deeper insight into the technical aspects of the CVE.
Vulnerability Description
The vulnerability arises due to improper access control in various models of Buffalo broadband routers, enabling attackers to take control of the devices remotely.
Affected Systems and Versions
The affected products include Buffalo broadband routers with specific firmware versions including BHR-4GRV, DWR-HP-G300NH, WHR-300HP, and many others listed in the vendor data.
Exploitation Mechanism
Remote unauthenticated attackers can exploit this vulnerability to launch telnet service and execute arbitrary commands as root, posing a significant security risk.
Mitigation and Prevention
To safeguard your systems and network against CVE-2021-3512, follow these mitigation and prevention strategies.
Immediate Steps to Take
Immediately update the firmware of the affected Buffalo broadband routers to the latest version provided by the vendor. Disable telnet service and apply access control lists to restrict unauthorized access.
Long-Term Security Practices
Implement network segmentation, regularly monitor for suspicious activities, and enforce strong password policies to enhance overall security posture.
Patching and Updates
Stay informed about security advisories from Buffalo INC. and apply patches promptly to address any known vulnerabilities and protect your infrastructure.