CVE Vulnerabilities

CVE-2021-20838

Improper Restriction of XML External Entity Reference

Published: Nov 01, 2021 | Modified: Nov 21, 2024
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
Ubuntu

Office Server Document Converter V7.2MR4 and earlier and V7.1MR7 and earlier allows a remote unauthenticated attacker to conduct an XML External Entity (XXE) attack to cause a denial of service (DoS) condition by processing a specially crafted XML document.

Weakness

The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.

Affected Software

Name Vendor Start Version End Version
Office_server_document_converter Antennahouse * 5.2 (excluding)
Office_server_document_converter Antennahouse 5.2 (including) 5.2 (including)
Office_server_document_converter Antennahouse 6.0 (including) 6.0 (including)
Office_server_document_converter Antennahouse 6.0-mr1 (including) 6.0-mr1 (including)
Office_server_document_converter Antennahouse 6.0-mr2 (including) 6.0-mr2 (including)
Office_server_document_converter Antennahouse 6.1 (including) 6.1 (including)
Office_server_document_converter Antennahouse 6.1-mr2 (including) 6.1-mr2 (including)
Office_server_document_converter Antennahouse 6.1-mr3 (including) 6.1-mr3 (including)
Office_server_document_converter Antennahouse 6.1-mr4 (including) 6.1-mr4 (including)
Office_server_document_converter Antennahouse 7.0 (including) 7.0 (including)
Office_server_document_converter Antennahouse 7.0-mr1 (including) 7.0-mr1 (including)
Office_server_document_converter Antennahouse 7.0-mr2 (including) 7.0-mr2 (including)
Office_server_document_converter Antennahouse 7.0-mr3 (including) 7.0-mr3 (including)
Office_server_document_converter Antennahouse 7.1 (including) 7.1 (including)
Office_server_document_converter Antennahouse 7.1-mr1 (including) 7.1-mr1 (including)
Office_server_document_converter Antennahouse 7.1-mr2 (including) 7.1-mr2 (including)
Office_server_document_converter Antennahouse 7.1-mr3 (including) 7.1-mr3 (including)
Office_server_document_converter Antennahouse 7.2 (including) 7.2 (including)
Office_server_document_converter Antennahouse 7.2-mr1 (including) 7.2-mr1 (including)
Office_server_document_converter Antennahouse 7.2-mr2 (including) 7.2-mr2 (including)
Office_server_document_converter Antennahouse 7.2-mr3 (including) 7.2-mr3 (including)
Office_server_document_converter Antennahouse 7.2-mr4 (including) 7.2-mr4 (including)

Potential Mitigations

References