CVE-2018-11767: Apache Hadoop KMS ACL regression

[Akira Ajisaka <aa...@apache.org>]

CVE-2018-11767: Apache Hadoop KMS ACL regression

Severity: Severe

Vendor: The Apache Hadoop Software Foundation

Versions affected: 2.9.0 to 2.9.1, 2.8.3 to 2.8.4, 2.7.5 to 2.7.6.

Description:
After the security fix for CVE-2017-15713, KMS has an access control regression,
blocking users or granting access to users incorrectly, if the system
uses non-default groups mapping mechanisms such as LdapGroupsMapping,
CompositeGroupsMapping, or NullGroupsMapping.

Mitigation:
Users should upgrade to Apache Hadoop 2.7.7, 2.8.5, or 2.9.2.

Credit:
This issue was discovered by Wei-Chiu Chuang.

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