CVE-2021-20853 : Security Advisory and Response
Stay informed about CVE-2021-20853 impacting ELECOM LAN routers with administrator privilege vulnerabilities. Learn the impact, technical details, and mitigation steps.
ELECOM LAN routers (WRH-733GBK firmware v1.02.9 and prior and WRH-733GWH firmware v1.02.9 and prior) contain a vulnerability that allows a network-adjacent attacker with administrator privileges to execute arbitrary OS commands through unspecified vectors.
Understanding CVE-2021-20853
This section provides insights into the nature of the CVE-2021-20853 vulnerability.
What is CVE-2021-20853?
CVE-2021-20853 refers to the OS Command Injection vulnerability present in ELECOM LAN routers, potentially exploited by an attacker to run unauthorized OS commands.
The Impact of CVE-2021-20853
The vulnerability allows a network-adjacent attacker to gain elevated privileges and execute malicious commands, posing a severe security risk to affected systems.
Technical Details of CVE-2021-20853
Explore the technical aspects of CVE-2021-20853 to better understand its implications.
Vulnerability Description
The vulnerability in ELECOM LAN routers enables an attacker with admin access to execute arbitrary OS commands without proper authorization.
Affected Systems and Versions
ELECOM LAN routers with WRH-733GBK firmware v1.02.9 and earlier, and WRH-733GWH firmware v1.02.9 and earlier are impacted by this vulnerability.
Exploitation Mechanism
Attackers can leverage the CVE-2021-20853 vulnerability to launch OS command injection attacks through unspecified entry points.
Mitigation and Prevention
Learn how to mitigate the risks associated with CVE-2021-20853 and safeguard your systems.
Immediate Steps to Take
It is crucial to take immediate actions to mitigate the vulnerability's impact, such as applying security patches and restricting network access.
Long-Term Security Practices
Implement strong security measures, conduct regular security audits, and educate users to enhance long-term system security.
Patching and Updates
Stay informed about security updates released by ELECOM CO.,LTD. for affected routers and ensure timely application to address the CVE-2021-20853 vulnerability.