CVE-2021-27817 : Vulnerability Insights and Analysis
Learn about CVE-2021-27817, a critical remote command execution vulnerability in shopxo 1.9.3. Understand its impact, affected systems, exploitation, and mitigation steps.
A remote command execution vulnerability in shopxo 1.9.3 allows an attacker to upload malicious code generated by phar with a JPG suffix.
Understanding CVE-2021-27817
This CVE discloses a critical remote command execution flaw in shopxo 1.9.3, enabling threat actors to execute arbitrary commands by manipulating file extensions.
What is CVE-2021-27817?
CVE-2021-27817 is a security vulnerability in shopxo 1.9.3 that permits malicious actors to upload and execute harmful code disguised as image files.
The Impact of CVE-2021-27817
The exploitation of this vulnerability could lead to unauthorized remote code execution, compromising the integrity and confidentiality of the affected system.
Technical Details of CVE-2021-27817
This section details the specifics of the vulnerability, including affected systems, the exploitation mechanism, and more.
Vulnerability Description
The flaw allows attackers to upload PHP files disguised with a JPG extension, consequently executing arbitrary commands on the server.
Affected Systems and Versions
Shopxo version 1.9.3 is impacted by this vulnerability, exposing any system with this version to potential attacks.
Exploitation Mechanism
By modifying the file extension to disguise PHP code as image files with the JPG extension, threat actors can bypass security controls and execute malicious commands remotely.
Mitigation and Prevention
To secure systems against CVE-2021-27817, immediate actions and long-term security measures are crucial.
Immediate Steps to Take
- Update shopxo to the latest version to patch the vulnerability.
- Implement strict file upload validation to prohibit uploading PHP files disguised as other formats.
Long-Term Security Practices
- Regularly monitor and audit file uploads for any suspicious activities.
- Train users on safe file handling practices to minimize the risk of similar vulnerabilities.
Patching and Updates
Frequently check for security updates and patches released by shopxo to address known vulnerabilities.