Security · High impactFan score 43 · Tier B
Critical Rails Flaw Lets Attackers Write Server Files via Crafted ImageMagick Uploads
The Hacker News · By info@thehackernews.com (The Hacker News) ·
A critical flaw in Ruby on Rails could allow an unauthenticated attacker to write arbitrary files on an app's server by uploading a crafted file if the app processes uploads using ImageMagick. The Rails project disclosed the flaw in an advisory and fixed it in versions 8.1.4.1…
The Brief
- A critical flaw in Ruby on Rails lets an unauthenticated attacker write arbitrary files on an app's server by uploading a crafted file.
- The flaw applies when an app processes uploads with ImageMagick.
- The Rails project disclosed the flaw in an advisory and fixed it in versions starting with 8.1.4.1; the source excerpt is truncated.
Why it matters
Any Rails app that handles uploads through ImageMagick may be exposed to unauthenticated file writes on its server, so affected teams should patch promptly.
Who’s affected
- Rails apps that process uploads with ImageMagick
What to do
- Upgrade Ruby on Rails to a fixed version, starting with 8.1.4.1, per the Rails advisory
- Ruby on Rails 8.1.4.1
- #rails
- #imagemagick
- #file-upload
- #vulnerability
- #ruby
- #security
