CVE-2021-41042: Improper Restriction of XML External Entity Reference

July 8, 2022 (updated July 19, 2022)

In Eclipse Lyo versions 1.0.0 to 4.1.0, a TransformerFactory is initialized with the defaults that do not restrict DTD loading when working with RDF/XML. This allows an attacker to cause an external DTD to be retrieved.

References

github.com/advisories/GHSA-6296-mvgp-27hp
github.com/eclipse/lyo/commit/a8b15b7f49ca15e55f6699749c39705d21367c6e
github.com/eclipse/lyo/releases/tag/v5.0.0
gitlab.eclipse.org/eclipsefdn/emo-team/emo/-/issues/287
nvd.nist.gov/vuln/detail/CVE-2021-41042

Code Behaviors & Features

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