[HADOOP-12584] Disable browsing the static directory in HttpServer2

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.8.0
• Fix Version/s: 2.8.0, 3.0.0-alpha1
• Component/s: security
• Target Version/s: 2.8.0
• Hadoop Flags: Reviewed
• Assignee: Robert Kanter
• Reporter: Robert Kanter
• Created: 18/Nov/15 22:38
• Updated: 30/Aug/16 01:21
• Resolved: 12/Jan/16 04:36

Description

We found a minor security issue with the Yarn Web UIs (or anything using HttpServer2. Currently, you can list the contents of the /static directory for the RM, NM, and JHS. This isn't a huge deal, but there are some ways to abuse this to get access to files on the host, though it would be pretty difficult. It's also good practice to disable directory listing on web apps.

Here are the URLs:

• http://HOST:8088/static/
• http://HOST:19888/static/
• http://HOST:8042/static/

Issue Links

• breaks: YARN-4379 TestWebApp failing in trunk