CVE-2020-14338: Improper Input Validation

February 15, 2022 (updated June 24, 2022)

A flaw was found in Wildfly’s implementation of Xerces, specifically in the way the XMLSchemaValidator class in the JAXP component of Wildfly enforced the “use-grammar-pool-only” feature. This flaw allows a specially-crafted XML file to manipulate the validation process in certain cases. This issue is the same flaw as CVE-2020-14621, which affected OpenJDK, and uses a similar code. This flaw affects all Xerces JBoss versions before 2.12.0.SP3.

References

bugzilla.redhat.com/show_bug.cgi?id=1860054
github.com/advisories/GHSA-w4jq-qh47-hvjq
lists.apache.org/thread.html/rf96c5afb26b596b4b97883aa90b6c0b0fc4c26aaeea7123c21912103@%3Cj-users.xerces.apache.org%3E
nvd.nist.gov/vuln/detail/CVE-2020-14338

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