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Fix NPE in Logfile Audit Filter (#38120) #38273

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albertzaharovits
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The culprit in #38097 is an IndicesRequest that has no indices,
but instead of request.indices() returning null or String[0]
it returned String[] {null} . This tripped the audit filter.

I have addressed this in two ways:

  1. request.indices() returning String[] {null} is treated as null
    or String[0], i.e. no indices
  2. null values among the roles and indices lists, which are
    unexpected, will never again stumble the audit filter; null values
    are treated as special values that will not match any policy,
    i.e. their events will always be printed.

Closes #38097

The culprit in elastic#38097 is an `IndicesRequest` that has no indices,
but instead of `request.indices()` returning `null` or `String[0]`
it returned `String[] {null}` . This tripped the audit filter.

I have addressed this in two ways:
1. `request.indices()` returning `String[] {null}` is treated as `null`
    or `String[0]`, i.e. no indices
2. `null` values among the roles and indices lists, which are
    unexpected, will never again stumble the audit filter; `null` values
    are treated as special values that will not match any policy,
    i.e. their events will always be printed.

Closes elastic#38097
@albertzaharovits albertzaharovits self-assigned this Feb 3, 2019
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Pinging @elastic/es-security

@albertzaharovits albertzaharovits merged commit de7accb into elastic:6.6 Feb 3, 2019
@albertzaharovits albertzaharovits deleted the 6.6-backport-fix-bug-38097 branch February 3, 2019 11:24
jasontedor added a commit to jasontedor/elasticsearch that referenced this pull request Feb 8, 2019
* 6.6: (121 commits)
  [DOCS] Add warning about bypassing ML PUT APIs (elastic#38608)
  fix dissect doc "ip" --> "clientip" (elastic#38512)
  bad formatted JSON object (elastic#38515)
  SQL: Fix issue with IN not resolving to underlying keyword field (elastic#38440)
  Update ilm-api.asciidoc, point to REMOVE policy (elastic#38235)
  Backport changes to the release notes script. (elastic#38347)
  Change the milliseconds precision to 3 digits for intervals. (elastic#38297)
  SecuritySettingsSource license.self_generated: trial (elastic#38233) (elastic#38398)
  Fix IndexAuditTrail rolling upgrade on rollover edge 2 (elastic#38286) (elastic#38381)
  Cleanup construction of interceptors (elastic#38388)
  Skip unsupported languages for tests (elastic#38328) (elastic#38385)
  [ILM][TEST] increase assertBusy timeout (elastic#36864) (elastic#38354)
  Docs: Drop inline callout from scroll example (elastic#38340) (elastic#38365)
  Preserve ILM operation mode when creating new lifecycles (elastic#38134) (elastic#38230)
  [ML] Add explanation so far to file structure finder exceptions (elastic#38337)
  ML: Fix error race condition on stop _all datafeeds and close _all jobs (elastic#38113) (elastic#38211) (elastic#38222)
  SQL: Generate relevant error message when grouping functions are not used in GROUP BY (elastic#38017)
  Fix NPE in Logfile Audit Filter (elastic#38120) (elastic#38273)
  Enable trace log in FollowerFailOverIT (elastic#38148)
  Replace awaitBusy with assertBusy in atLeastDocsIndexed (elastic#38190)
  ...
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2 participants