CVE-2023-22832: Apache NiFi: Improper Restriction of XML External Entity References in ExtractCCDAAttributes

[David Handermann <exceptionfactory () apache org>]

Severity: moderate

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.

This issue is being tracked as NIFI-11029 

Credit:

Yi Cai of Chaitin Tech (finder)

References:

https://nifi.apache.org/security.html#CVE-2023-22832
https://nifi.apache.org/
https://www.cve.org/CVERecord?id=CVE-2023-22832
https://issues.apache.org/jira/browse/NIFI-11029

Timeline:

2023-01-03: reported