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Date: Wed, 4 Dec 2019 06:25:00 +0100
From: mibo <mibo@...che.org>
To: oss-security@...ts.openwall.com
Subject: CVE-2019-17554: Olingo: XML External Entity resolution attack

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

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