CVE-2021-27112 : Vulnerability Insights and Analysis

LightCMS v1.3.5 contains a remote code execution vulnerability in /app/Http/Controllers/Admin/NEditorController.php during the downloading of external images.

Understanding CVE-2021-27112

This CVE identifies a remote code execution vulnerability present in LightCMS v1.3.5, specifically in the NEditorController.php file.

What is CVE-2021-27112?

CVE-2021-27112 refers to a security flaw in LightCMS v1.3.5 that allows attackers to execute arbitrary code remotely via the handling of external image downloads.

The Impact of CVE-2021-27112

This vulnerability could be exploited by malicious actors to execute unauthorized commands on the affected system, potentially leading to complete system compromise if not addressed.

Technical Details of CVE-2021-27112

The technical details highlight the specific aspects of the vulnerability.

Vulnerability Description

The vulnerability exists in the NEditorController.php file of LightCMS v1.3.5, enabling remote code execution during external image downloads.

Affected Systems and Versions

All instances of LightCMS v1.3.5 are impacted by this vulnerability.

Exploitation Mechanism

Attackers can exploit this flaw by manipulating external image download requests to execute arbitrary code on the target system.

Mitigation and Prevention

To safeguard systems from CVE-2021-27112, certain mitigation strategies and preventive measures can be adopted.

Immediate Steps to Take

Disable external image downloads in LightCMS v1.3.5 to prevent exploitation.
Implement network-level security controls to filter out malicious requests.

Long-Term Security Practices

Regularly monitor and update the LightCMS application to ensure the latest security patches are applied.
Conduct security audits and penetration testing to identify and address vulnerabilities proactively.

Patching and Updates

Stay informed about security advisories related to LightCMS and promptly apply patches released by the vendor to mitigate CVE-2021-27112.