CVE-2021-20858 : Security Advisory and Response
Discover the impact of CVE-2021-20858, a Cross-site scripting vulnerability in ELECOM LAN router WRC-2533GHBK-I firmware allowing remote attackers to inject arbitrary scripts.
A Cross-site scripting vulnerability in the ELECOM LAN router WRC-2533GHBK-I firmware v1.20 and prior has been identified, allowing a remote authenticated attacker to inject arbitrary scripts.
Understanding CVE-2021-20858
This section provides insights into the impact, technical details, and mitigation strategies related to CVE-2021-20858.
What is CVE-2021-20858?
CVE-2021-20858 refers to a Cross-site scripting vulnerability in the ELECOM LAN router WRC-2533GHBK-I firmware v1.20 and earlier versions. This vulnerability enables a remote authenticated attacker to inject malicious scripts through unspecified vectors.
The Impact of CVE-2021-20858
The impact of this vulnerability is significant as it allows attackers to execute arbitrary scripts on affected devices, potentially leading to data theft, unauthorized access, or other malicious activities.
Technical Details of CVE-2021-20858
In this section, you will find detailed technical information about the vulnerability.
Vulnerability Description
The Cross-site scripting vulnerability in the ELECOM LAN router WRC-2533GHBK-I firmware v1.20 and earlier versions permits remote authenticated attackers to inject arbitrary scripts via unspecified vectors.
Affected Systems and Versions
Affected systems include the ELECOM LAN router running firmware v1.20 and prior versions, specifically the WRC-2533GHBK-I model.
Exploitation Mechanism
The exploitation of this vulnerability involves a remote authenticated attacker injecting malicious scripts into the affected router via unspecified vectors.
Mitigation and Prevention
Learn how to protect your system from the CVE-2021-20858 vulnerability.
Immediate Steps to Take
It is advised to update the firmware of the ELECOM LAN router to a patched version provided by the vendor. Additionally, ensure secure configurations to minimize the risk of exploitation.
Long-Term Security Practices
Implementing network security best practices, such as regular security audits, network segmentation, and user awareness training, can enhance overall security posture.
Patching and Updates
Regularly check for firmware updates and security advisories from ELECOM CO.,LTD. to apply patches that address the CVE-2021-20858 vulnerability.