CVE-2019-15521 Explained : Impact and Mitigation
Learn about CVE-2019-15521, a PHP object injection vulnerability in Spoon Library and Fork CMS versions before 1.4.1. Understand the impact, affected systems, exploitation, and mitigation steps.
PHP object injection can occur in Spoon Library before 2014-02-06, as observed in Fork CMS versions prior to 1.4.1, and similar products. This vulnerability can be exploited via a cookie that includes an object.
Understanding CVE-2019-15521
Spoon Library through 2014-02-06, as used in Fork CMS before 1.4.1 and other products, allows PHP object injection via a cookie containing an object.
What is CVE-2019-15521?
CVE-2019-15521 is a vulnerability that enables PHP object injection in Spoon Library, affecting versions before 2014-02-06. This issue is also present in Fork CMS versions earlier than 1.4.1 and potentially in similar products. The vulnerability can be exploited through a specially crafted cookie that includes an object.
The Impact of CVE-2019-15521
This vulnerability could allow an attacker to execute arbitrary PHP code on the server, leading to various malicious activities such as data theft, unauthorized access, and system compromise.
Technical Details of CVE-2019-15521
Spoon Library before 2014-02-06 is susceptible to PHP object injection, as seen in Fork CMS versions pre-1.4.1 and other related products.
Vulnerability Description
The vulnerability in CVE-2019-15521 allows for PHP object injection via a manipulated cookie that contains an object, potentially leading to remote code execution.
Affected Systems and Versions
- Spoon Library versions before 2014-02-06
- Fork CMS versions earlier than 1.4.1
- Potentially other products using the vulnerable Spoon Library
Exploitation Mechanism
The vulnerability can be exploited by crafting a malicious cookie that includes an object, which upon execution, triggers the PHP object injection.
Mitigation and Prevention
It is crucial to take immediate steps to mitigate the risks posed by CVE-2019-15521.
Immediate Steps to Take
- Update Spoon Library and Fork CMS to the latest secure versions
- Implement input validation to sanitize user-supplied data
- Monitor and restrict the use of cookies containing objects
Long-Term Security Practices
- Regularly audit and update third-party libraries to address known vulnerabilities
- Educate developers on secure coding practices to prevent injection attacks
Patching and Updates
- Apply patches provided by the respective vendors to fix the PHP object injection vulnerability