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XML External Entity Reference in Apache NiFi

High severity GitHub Reviewed Published Feb 10, 2023 to the GitHub Advisory Database • Updated Oct 14, 2024

Package

maven org.apache.nifi:nifi-ccda-processors (Maven)

Affected versions

>= 1.2.0, < 1.20.0

Patched versions

1.20.0

Description

The ExtractCCDAAttributes Processor in Apache NiFi 1.2.0 through 1.19.1 does not restrict XML External Entity references. Flow configurations that include the ExtractCCDAAttributes Processor are vulnerable to malicious XML documents that contain Document Type Declarations with XML External Entity references. The resolution disables Document Type Declarations and disallows XML External Entity resolution in the ExtractCCDAAttributes Processor.

References

Published by the National Vulnerability Database Feb 10, 2023
Published to the GitHub Advisory Database Feb 10, 2023
Reviewed Feb 10, 2023
Last updated Oct 14, 2024

Severity

High

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
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

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:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS score

0.127%
(49th percentile)

Weaknesses

CVE ID

CVE-2023-22832

GHSA ID

GHSA-hxjp-q6c3-38fx

Source code

Credits

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