Date: Mon, 18 Sep 2017 10:45:14 -0700 From: Shalin Shekhar Mangar <shalin@...che.org> To: oss-security@...ts.openwall.com Subject: CVE-2017-9803: Security vulnerability in kerberos delegation token functionality CVE-2017-9803: Security vulnerability in kerberos delegation token functionality Severity: Important Vendor: The Apache Software Foundation Versions Affected: Apache Solr 6.2.0 to 6.6.0 Description: Solr's Kerberos plugin can be configured to use delegation tokens, which allows an application to reuse the authentication of an end-user or another application. There are two issues with this functionality (when using SecurityAwareZkACLProvider type of ACL provider e.g. SaslZkACLProvider), Firstly, access to the security configuration can be leaked to users other than the solr super user. Secondly, malicious users can exploit this leaked configuration for privilege escalation to further expose/modify private data and/or disrupt operations in the Solr cluster. The vulnerability is fixed from Solr 6.6.1 onwards. Mitigation: 6.x users should upgrade to 6.6.1 Credit: This issue was discovered by Hrishikesh Gadre of Cloudera Inc. References: https://issues.apache.org/jira/browse/SOLR-11184 https://wiki.apache.org/solr/SolrSecurity -- The Lucene PMC
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