CVE-2021-37144 : Exploit Details and Defense Strategies
Learn about CVE-2021-37144 affecting CSZ CMS 1.2.9, allowing attackers to delete files via PHP unlink() function. Follow mitigation steps to enhance security.
CSZ CMS 1.2.9 is vulnerable to Arbitrary File Deletion due to a lack of proper user input sanitization while calling the unlink() function in PHP.
Understanding CVE-2021-37144
This CVE highlights a security flaw in CSZ CMS version 1.2.9 that allows attackers to delete files by manipulating user input.
What is CVE-2021-37144?
CVE-2021-37144 exposes a vulnerability in CSZ CMS 1.2.9, enabling malicious actors to perform Arbitrary File Deletion attacks through improper input validation.
The Impact of CVE-2021-37144
The impact of this vulnerability is significant as it can lead to unauthorized deletion of files by exploiting the unlink() function without adequate input validation.
Technical Details of CVE-2021-37144
This section provides a detailed overview of the vulnerability's technical aspects.
Vulnerability Description
The issue stems from the unlink() function in PHP, where insufficient input sanitization allows an attacker to specify the file path for deletion, leading to Arbitrary File Deletion.
Affected Systems and Versions
CSZ CMS version 1.2.9 is confirmed to be affected by this vulnerability.
Exploitation Mechanism
By crafting malicious input that influences the file path parameter within the unlink() function, threat actors can trigger unauthorized file deletions.
Mitigation and Prevention
To address CVE-2021-37144 and enhance system security, the following steps are recommended.
Immediate Steps to Take
- Update CSZ CMS to the latest patched version to mitigate the Arbitrary File Deletion vulnerability.
- Implement input validation mechanisms to sanitize user-controlled data effectively.
Long-Term Security Practices
- Regularly monitor and audit file system operations for any unauthorized deletions.
- Conduct security training to educate developers on secure coding practices and the importance of input sanitization.
Patching and Updates
Stay informed about security updates and patches released by CSZ CMS to protect against known vulnerabilities.