CVE-2018-20129 : Exploit Details and Defense Strategies
CVE-2018-20129 exposes a remote code execution flaw in DedeCMS V5.7 SP2, allowing attackers to upload and execute PHP code. Learn about the impact, affected systems, exploitation, and mitigation steps.
A vulnerability has been found in DedeCMS V5.7 SP2 that allows attackers to upload and execute arbitrary PHP code remotely.
Understanding CVE-2018-20129
What is CVE-2018-20129?
This CVE identifies a security flaw in DedeCMS V5.7 SP2 that enables attackers to upload and execute PHP code by manipulating file extensions.
The Impact of CVE-2018-20129
The vulnerability allows remote attackers to compromise the affected system by uploading malicious PHP code.
Technical Details of CVE-2018-20129
Vulnerability Description
Attackers can exploit the 'select_images_post.php' file to upload and execute PHP code using a modified file extension and content type.
Affected Systems and Versions
- Product: DedeCMS V5.7 SP2
- Vendor: N/A
- Version: N/A
Exploitation Mechanism
By manipulating the file extension and using a modified ".php" substring, attackers can upload PHP code disguised as an image file.
Mitigation and Prevention
Immediate Steps to Take
- Disable file uploads in the affected 'select_images_post.php' file.
- Implement input validation to prevent malicious file uploads.
Long-Term Security Practices
- Regularly update and patch the CMS to address security vulnerabilities.
- Conduct security audits to identify and mitigate potential risks.
Patching and Updates
Apply patches and updates provided by DedeCMS to fix the vulnerability.