CVE-2021-44147 : Vulnerability Insights and Analysis
Discover the XML External Entity (XXE) issue in Claris FileMaker Pro and Server versions before 19.4.1, enabling attackers to access local files and execute server-side request forgery attacks. Learn about impacts, technical details, and mitigation steps.
Claris FileMaker Pro and Server versions before 19.4.1 are prone to an XML External Entity (XXE) vulnerability that enables a remote attacker to access local files and execute server-side request forgery attacks.
Understanding CVE-2021-44147
This CVE describes a critical security issue in Claris FileMaker Pro and Server.
What is CVE-2021-44147?
An XML External Entity vulnerability in Claris FileMaker Pro and Server allows attackers to reveal local files through a maliciously crafted XML/Excel document and conduct server-side request forgery attacks.
The Impact of CVE-2021-44147
The vulnerability can lead to unauthorized access to sensitive local files and potential server-side request forgery, posing a significant security risk.
Technical Details of CVE-2021-44147
This section delves into the technical aspects of the vulnerability.
Vulnerability Description
The vulnerability in Claris FileMaker Pro and Server versions before 19.4.1 permits a remote attacker to disclose local files through a carefully crafted XML or Excel document.
Affected Systems and Versions
- Product: Claris FileMaker Pro and Server
- Versions affected: Before 19.4.1
Exploitation Mechanism
The vulnerability can be exploited through specially crafted XML or Excel documents, allowing attackers to access information from local files and perform server-side request forgery.
Mitigation and Prevention
To address and prevent the exploitation of CVE-2021-44147, follow these key steps:
Immediate Steps to Take
- Update Claris FileMaker Pro and Server to version 19.4.1 or later.
- Avoid opening untrusted XML or Excel files.
- Implement strict input validation to mitigate XXE attacks.
Long-Term Security Practices
- Conduct regular security assessments and audits.
- Educate employees on the risks of opening untrusted files.
- Stay informed about security best practices and updates.
Patching and Updates
Regularly check for patches and updates from Claris to ensure the latest security features and fixes are applied.