CVE-2021-43162 : Vulnerability Insights and Analysis

A Remote Code Execution (RCE) vulnerability exists in Ruijie Networks Ruijie RG-EW Series Routers up to ReyeeOS 1.55.1915 / EW_3.0(1)B11P55 via the runPackDiagnose function in /cgi-bin/luci/api/diagnose.

Understanding CVE-2021-43162

This CVE-2021-43162 involves a critical Remote Code Execution vulnerability in Ruijie Networks Ruijie RG-EW Series Routers.

What is CVE-2021-43162?

CVE-2021-43162 is an RCE vulnerability found in Ruijie RG-EW Series Routers through the runPackDiagnose function within the /cgi-bin/luci/api/diagnose path.

The Impact of CVE-2021-43162

The vulnerability could allow remote attackers to execute arbitrary code on the affected routers, potentially leading to unauthorized access, data theft, or system control.

Technical Details of CVE-2021-43162

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The vulnerability exists in Ruijie Networks Ruijie RG-EW Series Routers up to ReyeeOS 1.55.1915 / EW_3.0(1)B11P55 via the runPackDiagnose function in /cgi-bin/luci/api/diagnose.

Affected Systems and Versions

Ruijie RG-EW Series Routers up to ReyeeOS 1.55.1915 / EW_3.0(1)B11P55 are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability remotely through the runPackDiagnose function, potentially leading to unauthorized code execution.

Mitigation and Prevention

Protective measures to defend against CVE-2021-43162

Immediate Steps to Take

Apply patches provided by the vendor promptly to address the vulnerability.
Review and restrict access to the affected routers.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update firmware and security patches for the routers.
Conduct security audits and assessments periodically to detect vulnerabilities.

Patching and Updates

Keep the Ruijie RG-EW Series Routers up to date with the latest firmware and security patches.