CVE-2021-20644 : Exploit Details and Defense Strategies

ELECOM WRC-1467GHBK-A router allows arbitrary scripts to be executed on the user's web browser through a specially crafted SSID, leading to a script injection vulnerability.

Understanding CVE-2021-20644

This CVE describes a security flaw in the ELECOM WRC-1467GHBK-A router that enables malicious script execution on a web browser.

What is CVE-2021-20644?

The vulnerability in ELECOM WRC-1467GHBK-A router permits the execution of arbitrary scripts when a specially designed SSID is displayed on the web setup page.

The Impact of CVE-2021-20644

By exploiting this vulnerability, attackers can inject and execute malicious scripts on the web browser of users, potentially leading to unauthorized access or data theft.

Technical Details of CVE-2021-20644

This section covers specific technical aspects of the CVE.

Vulnerability Description

The flaw in ELECOM WRC-1467GHBK-A router allows threat actors to inject and execute arbitrary scripts by manipulating the SSID displayed on the web setup page.

Affected Systems and Versions

The CVE affects the ELECOM WRC-1467GHBK-A router, specifically the version marked as 'WRC-1467GHBK-A'.

Exploitation Mechanism

Attackers exploit this vulnerability by crafting a malicious SSID, which triggers script execution on the user's web browser.

Mitigation and Prevention

Protecting systems from CVE-2021-20644 requires immediate action and long-term security measures.

Immediate Steps to Take

Users should update the router firmware to the latest version provided by ELECOM to mitigate the risk of script injection attacks.

Long-Term Security Practices

Regularly monitor for security updates from ELECOM and follow best practices to secure network devices and prevent unauthorized access.

Patching and Updates

ELECOM users are advised to install patches promptly to fix the vulnerability and enhance the security of the WRC-1467GHBK-A router.