ESB-2018.1112 - [Win][UNIX/Linux] Apache Solr: Access confidential data - Remote/unauthenticated 2018-04-12
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.1112 CVE-2018-1308: XXE attack through Apache Solr's DIH's dataConfig request parameter 12 April 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Apache Solr Publisher: The Apache Software Foundation Operating System: UNIX variants (UNIX, Linux, OSX) Windows Impact/Access: Access Confidential Data -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-1308 Original Bulletin: https://mail-archives.apache.org/mod_mbox/www-announce/201804.mbox/%3C000001d3cf68%245ac69af0%241053d0d0%24%40apache.org%3E - --------------------------BEGIN INCLUDED TEXT-------------------- CVE-2018-1308: XXE attack through Apache Solr's DIH's dataConfig request parameter Severity: Major Vendor: The Apache Software Foundation Versions Affected: Solr 1.2 to 6.6.2 Solr 7.0.0 to 7.2.1 Description: The details of this vulnerability were reported to the Apache Security mailing list. This vulnerability relates to an XML external entity expansion (XXE) in the `&dataConfig=<inlinexml>` parameter of Solr's DataImportHandler. It can be used as XXE using file/ftp/http protocols in order to read arbitrary local files from the Solr server or the internal network. See [1] for more details. Mitigation: Users are advised to upgrade to either Solr 6.6.3 or Solr 7.3.0 releases both of which address the vulnerability. Once upgrade is complete, no other steps are required. Those releases disable external entities in anonymous XML files passed through this request parameter. If users are unable to upgrade to Solr 6.6.3 or Solr 7.3.0 then they are advised to disable data import handler in their solrconfig.xml file and restart their Solr instances. Alternatively, if Solr instances are only used locally without access to public internet, the vulnerability cannot be used directly, so it may not be required to update, and instead reverse proxies or Solr client applications should be guarded to not allow end users to inject `dataConfig` request parameters. Please refer to [2] on how to correctly secure Solr servers. Credit: Mai XinagNongYu References: [1] https://issues.apache.org/jira/browse/SOLR-11971 [2] https://wiki.apache.org/solr/SolrSecurity - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBWs6YY4x+lLeg9Ub1AQgW1A/9HT9Q2C939WwuvZIgbf5zsHFOGuqfd1SH GLqXYt/gVK4q0GYhzPF17zoIgmCpIcQYFquCMSdTzk9PPxRBtgShUqpJYge/su6n Evx29xx2lAKyfMmLr/FmWfhufhFijSKgti6mCtbDwjLKVjzENOhFH9khSqy+53f1 fWqbBjpbO03Gz4nMaPLx2pWAVdzX3xH3VjDJxDOZ7srQyl7mT9QlHjwT2wbGoGUz oF2wzyXKYloL22g2fLN24slPxKZg+Bs+ABaRiuQ5xt9GpAPrVxO4j1Yi7Z0vnuRm ah/nKAUZTIvHRbcE3j2oFNODKEyOPbOMva5oSy1q13WnmLLeV8XfNAIgDOEq5sgU vnca5RZiDZAqCeGqV/KlCqYUie0LIS1KieAVh+/7CzthzOrV9xLqFpJUz/sVFE2E 91jXjTT7SRWr/YypVx13iAzYkBvTdeZSDErUqoIG2z689Si+qelTGxBB3uSIMDhi pD1uRgds7Qb68p7mjV+WHZfM6K2LJn2mapGXLO9WS/SuNff/gum5opXO4rS9apN+ 6sbp1T3bc3agyhqb65dGz6kFIi3eybrPkLBKwrldBa9pJj5HAkRyiR0G4tAjxjpq buwnkXuB+hJLWbbrE1r2CjaU1dFKWlYqYcok2Yl61/OBIleqkHU4eeq6cBE+gIVs xX10FS5BNW8= =YZ5/ -----END PGP SIGNATURE-----« Back to bulletins