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Allen Wittenauer commented on MAPREDUCE-2858: --------------------------------------------- OK, I guess I need to put my whole thought process here. The web app linked to from the RM could trivially redirect the user to an unknown/untrusted source. (There are countless ways to do that.) That location could then grab whatever creds are trying to be stolen. Worse yet, IIRC, the Hadoop token system uses addressless/forwardable tokens... > MRv2 WebApp Security > -------------------- > > Key: MAPREDUCE-2858 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-2858 > Project: Hadoop Map/Reduce > Issue Type: Sub-task > Components: applicationmaster, mrv2, security > Affects Versions: 0.23.0 > Reporter: Luke Lu > Assignee: Luke Lu > Priority: Blocker > Fix For: 0.23.0 > > > In MRv2, while the system servers (ResourceManager (RM), NodeManager (NM) and > NameNode (NN)) run as "trusted" > system users, the application masters (AM) run as users who submit the > application. While this offers great flexibility > to run multiple version of mapreduce frameworks (including their UI) on the > same Hadoop cluster, it has significant > implication for the security of webapps (Please do not discuss company > specific vulnerabilities here). > Requirements: > # Secure authentication for AM (for app/job level ACLs). > # Webapp security should be optional via site configuration. > # Support existing pluggable single sign on mechanisms. > # Should not require per app/user configuration for deployment. > # Should not require special site-wide DNS configuration for deployment. > This the top jira for webapp security. A design doc/notes of threat-modeling > and counter measures will be posted on the wiki. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira