CVE-2021-20863 : Security Advisory and Response
Learn about CVE-2021-20863, an OS command injection vulnerability impacting ELECOM routers. Discover the impact, affected systems, exploitation details, and mitigation steps.
This article provides detailed information about CVE-2021-20863, an OS command injection vulnerability affecting ELECOM routers. Read on to understand the impact, technical details, and mitigation strategies.
Understanding CVE-2021-20863
CVE-2021-20863 is an OS command injection vulnerability that allows network-adjacent authenticated attackers to execute arbitrary OS commands with root privileges on ELECOM routers.
What is CVE-2021-20863?
An OS command injection vulnerability in ELECOM routers enables attackers to run unauthorized OS commands, potentially leading to system compromise.
The Impact of CVE-2021-20863
The vulnerability poses a significant risk as attackers with network access can gain control of affected routers, compromising network security and exposing sensitive information.
Technical Details of CVE-2021-20863
Learn more about the specifics of the vulnerability, affected systems, and how attackers can exploit it.
Vulnerability Description
The flaw exists in ELECOM routers, specifically in various firmware versions, allowing attackers to execute malicious OS commands through unspecified vectors.
Affected Systems and Versions
ELECOM routers, including models such as WRC-1167GST2, WRC-2533GS2, WRC-1750GS, and others, running firmware versions prior to specific numbers are vulnerable to this exploit.
Exploitation Mechanism
Attackers can leverage this vulnerability by sending crafted requests to the affected routers, enabling them to execute unauthorized commands with elevated privileges.
Mitigation and Prevention
Discover the steps to mitigate the risks associated with CVE-2021-20863 and prevent potential exploitation.
Immediate Steps to Take
It is crucial to apply security patches provided by ELECOM promptly to address the vulnerability and enhance router security.
Long-Term Security Practices
Implement network segmentation, regularly update firmware, monitor for unusual activities, and follow best security practices to safeguard against such vulnerabilities.
Patching and Updates
Stay informed about firmware updates and security advisories from ELECOM to patch vulnerabilities, enhance security, and protect your network from potential attacks.