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HIGH

Apache Ivy: XML External Entity vulnerability in Apache Ivy

Published Aug 21, 2023

Description

Improper Restriction of XML External Entity Reference, XML Injection (aka Blind XPath Injection) vulnerability in Apache Software Foundation Apache Ivy.This issue affects any version of Apache Ivy prior to 2.5.2.

When Apache Ivy prior to 2.5.2 parses XML files - either its own configuration, Ivy files or Apache Maven POMs - it will allow downloading external document type definitions and expand any entity references contained therein when used.

This can be used to exfiltrate data, access resources only the machine running Ivy has access to or disturb the execution of Ivy in different ways.

Starting with Ivy 2.5.2 DTD processing is disabled by default except when parsing Maven POMs where the default is to allow DTD processing but only to include a DTD snippet shipping with Ivy that is needed to deal with existing Maven POMs that are not valid XML files but are nevertheless accepted by Maven. Access can be be made more lenient via newly introduced system properties where needed.

Users of Ivy prior to version 2.5.2 can use Java system properties to restrict processing of external DTDs, see the section about "JAXP Properties for External Access restrictions" inside Oracle's "Java API for XML Processing (JAXP) Security Guide".

Affected products

Remediation

No remediation recorded yet.

Metrics

Weaknesses (2)

References (11)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner apache
Published Aug 21, 2023
Updated Feb 13, 2025
Reserved Dec 7, 2022
CISA Vulnrichment
Updated Sep 27, 2024
NVD
Status Modified
Modified Jun 17, 2026
Red Hat
Severity Moderate
Public date Aug 20, 2023
GHSA-2JC4-R94C-RP7H