Apache Tika 1.19 included an incomplete fix for CVE-2018-11761 which added an entity expansion limit for XML parsing. However, Tika reuses SAXParsers and calls reset() after each parse, which, for Xerces2 parsers, as per the documentation, removes the user-specified SecurityManager and thus removes entity expansion limits after the first parse. Apache Tika 1.19 is therefore still vulnerable to entity expansions which can lead to a denial of service attack. External Reference: https://lists.apache.org/thread.html/88de8350cda9b184888ec294c813c5bd8a2081de8fd3666f8904bc05@%3Cdev.tika.apache.org%3E Upstream Issue: https://issues.apache.org/jira/projects/TIKA/issues/TIKA-2727 Upstream Patch: https://github.com/apache/tika/commit/86d4ba1e
Created tika tracking bugs for this issue: Affects: fedora-all [bug 1639092]
Statement: This issue affects the versions of tika which is embedded in the nutch package as shipped with Red Hat Satellite 5. The tika server is not exposed, as such exploitation is difficult, Red Hat Product Security has rated this issue as having security impact of Low. A future update may address this issue. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
This vulnerability is out of security support scope for the following products: * Red Hat JBoss Fuse Service Works 6 * Red Hat JBoss BRMS 5 * Red Hat JBoss BRMS 6 * Red Hat JBoss BPM Suite 6 * Red Hat JBoss Data Virtualization & Services 6 Please refer to https://access.redhat.com/support/policy/updates/jboss_notes for more details.
This issue has been addressed in the following products: Red Hat Fuse 7.5.0 Via RHSA-2019:3892 https://access.redhat.com/errata/RHSA-2019:3892
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2018-11796