[WW-2779] Directory traversal vulnerability while serving static content

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 2.0.0
• Fix Version/s: 2.0.12, 2.1.3
• Component/s: Dispatch Filter
• Assignee: Musachy Barroso
• Reporter: Musachy Barroso
• Created: 21/Aug/08 21:49
• Updated: 28/Oct/12 22:08
• Resolved: 21/Aug/08 21:53

Description

FilterDispatcher (in 2.0) and DefaultStaticContentLoader (in 2.1) have a security vulnerability that allows an attacker to traverse the directory structure and download files outside the "static" content folder, using double-encoded urls and relative paths, like:

http://localhost:8080/struts2-blank-2.0.11.1/struts..

http://localhost:8080/struts2-blank-2.0.11.1/struts/..%252f

http://exampletomcat.com:8080/struts2-blank-2.0.11.1/struts/..%252f..%252f..%252fWEB-INF/classess/example/Login.class/

Not all container are vulnerable to this, but Struts code needs to be fixed to avoid serving static content outside the static folders.