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XML External Entity Reference in Eclipse Lyo

Moderate severity GitHub Reviewed Published Jul 8, 2022 to the GitHub Advisory Database • Updated Jan 27, 2023

Package

maven org.eclipse.lyo:lyo-parent (Maven)

Affected versions

>= 1.0.0, <= 4.1.0

Patched versions

5.0.0.Final

Description

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

Published by the National Vulnerability Database Jul 7, 2022
Published to the GitHub Advisory Database Jul 8, 2022
Reviewed Jul 8, 2022
Last updated Jan 27, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
Low

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L

EPSS score

0.125%
(48th percentile)

Weaknesses

CVE ID

CVE-2021-41042

GHSA ID

GHSA-6296-mvgp-27hp

Source code

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