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How the CVE Works
CVE-2025-24293 exploits Active Storage’s insufficient validation of image transformation methods when using `image_processing` with mini_magick. By default, Active Storage restricts unsafe methods, but the allowed list can be bypassed if user-supplied input is accepted for transformations. Attackers can inject malicious commands via untrusted parameters in methods like blob.variant(params[:t] => params[:v]), leading to arbitrary command execution on the server.
DailyCVE Form
Platform: Ruby on Rails
Version: >= 5.2.0
Vulnerability: Command Injection
Severity: Critical
Date: 2025-02-20
Prediction: Patch by 2025-03-10
What Undercode Say
Check Active Storage version rails active_storage:install gem list image_processing Vulnerable code example <%= image_tag blob.variant(params[:transform] => params[:value]) %> Mitigation snippet VALID_TRANSFORMS = ['resize', 'rotate', 'crop'] raise "Invalid transform" unless VALID_TRANSFORMS.include?(params[:transform])
How Exploit
- Craft malicious transformation params (e.g.,
{:t => "exploit", :v => "| rm -rf /"}). - Submit via unvalidated image processing endpoints.
Protection from this CVE
- Upgrade to fixed versions.
- Validate input strictly.
- Restrict ImageMagick policies.
Impact
- Remote code execution.
- System compromise.
- Data loss.
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Sources:
Reported By: github.com
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