CVE-2019-13574 : Exploit Details and Defense Strategies
Learn about CVE-2019-13574, a vulnerability in MiniMagick versions prior to 4.9.4 allowing remote command execution. Find mitigation steps and affected systems here.
MiniMagick Remote Command Execution Vulnerability
Understanding CVE-2019-13574
What is CVE-2019-13574?
MiniMagick versions prior to 4.9.4 are vulnerable to remote command execution due to improper handling of remote image filenames.
The Impact of CVE-2019-13574
This vulnerability allows attackers to execute remote commands by manipulating the input passed to Image.open in MiniMagick.
Technical Details of CVE-2019-13574
Vulnerability Description
The issue occurs in the file lib/mini_magick/image.rb in MiniMagick versions prior to 4.9.4, where a remote image filename can lead to remote command execution.
Affected Systems and Versions
- MiniMagick versions before 4.9.4
Exploitation Mechanism
- Attackers can exploit this vulnerability by inserting a '|' character followed by a command in the input passed to Image.open.
Mitigation and Prevention
Immediate Steps to Take
- Update MiniMagick to version 4.9.4 or later to mitigate the vulnerability.
Long-Term Security Practices
- Avoid processing untrusted image filenames directly in commands.
- Regularly monitor for security updates and patches.
- Implement input validation to prevent command injection.
Patching and Updates
- Refer to official sources for patch releases and security advisories.