[jira] [Commented] (SOLR-13472) HTTP requests to a node that does not hold a core of the collection are unauthorized

["Ishan Chattopadhyaya (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-13472?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16877453#comment-16877453 ] 

Ishan Chattopadhyaya commented on SOLR-13472:
---------------------------------------------

The problem here was:
1. node_2 doesn't have a replica for test collection.
2. As a result, the permissions that have been set couldn't be validated.
3. The "all" permission here was claimed by "admin", and hence this request was falsely marked MatchStatus.FORBIDDEN.

What should've happened is:
If node receiving the request doesn't host a replica, it should check if "forwardCredentials" is set to true (BasicAuthPlugin supports this), and mark MatchStatus.NO_PERMISSION_FOUND, so that the request isn't rejected right away, but validated properly on a forwarded node.

> HTTP requests to a node that does not hold a core of the collection are unauthorized
> ------------------------------------------------------------------------------------
>
>                 Key: SOLR-13472
>                 URL: https://issues.apache.org/jira/browse/SOLR-13472
>             Project: Solr
>          Issue Type: Bug
>          Components: Authorization
>    Affects Versions: 7.7.1, 8.0
>            Reporter: adfel
>            Assignee: Ishan Chattopadhyaya
>            Priority: Minor
>              Labels: security
>
> When creating collection in SolrCloud, collection is available for queries and updates through all Solr nodes, in particular nodes that does not hold one of collection's cores. This is expected behaviour that works when using SolrJ client or HTTP requests.
> When enabling authorization rules it seems that this behaviour is broken for HTTP requests:
>  - executing request to a node that holds part of the collection (core) obey to authorization rules as expected.
>  - other nodes respond with code 403 - unauthorized request.
> SolrJ still works as expected.
> Tested both with BasicAuthPlugin and KerberosPlugin authentication plugins.
> +Steps for reproduce:+
> 1. Create a cloud made of 2 nodes (node_1, node_2).
> 2. Configure authentication and authorization by uploading following security.json file to zookeeper:
>  
> {code:java}
> {
>  "authentication": {
>    "blockUnknown": true,
>    "class": "solr.BasicAuthPlugin",
>    "credentials": {
>      "solr": "'solr' user password_hash",
>      "indexer_app": "'indexer_app' password_hash",
>      "read_user": "'read_user' password_hash"
>    }
>  },
>  "authorization": {
>    "class": "solr.RuleBasedAuthorizationPlugin",
>    "permissions": [
>      {
>        "name": "read",
>        "role": "*"
>      },
>      {
>        "name": "update",
>        "role": [
>          "indexer",
>          "admin"
>        ]
>      },
>      {
>        "name": "all",
>        "role": "admin"
>      }
>    ],
>    "user-role": {
>      "solr": "admin",
>      "indexer_app": "indexer"
>    }
>  }
> }{code}
>  
> 3. create 'test' collection with one shard on *node_1*.
> -- 
> The following requests expected to succeed but return 403 status (unauthorized request):
> {code:java}
> curl -u read_user:read_user "http://node_2/solr/test/select?q=*:*"
> curl -u indexer_app:indexer_app "http://node_2/solr/test/select?q=*:*"
> curl -u indexer_app:indexer_app "http://node_2/solr/test/update?commit=true"
> {code}
>  
> Authenticated '_solr_' user requests works as expected. My guess is due to the special '_all_' role.



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