CVE-2019-17554: Olingo: XML External Entity resolution attack

[mibo <mibo () apache org>]

CVE-2019-17554: XML External Entity resolution attack

Severity: Important
Vendor: The Apache Software Foundation

Versions Affected:
Olingo 4.0.0 to 4.6.0
The OData v2 versions of Olingo 2.x are not affected

Description:
The XML content type entity deserializer is not configured to deny the
resolution of external entities.
Request with content type "application/xml", which trigger the
deserialization of entities, can be used to trigger XXE attacks.

Mitigation:
4.x.x users should upgrade to 4.7.0

Credit:
This issue was discovered by Archibald Haddock of Compass Security Schweiz AG.

Links:
https://issues.apache.org/jira/browse/OLINGO-1409