CVE Vulnerabilities

CVE-2021-27635

Improper Restriction of XML External Entity Reference

Published: Jun 09, 2021 | Modified: Nov 21, 2024
CVSS 3.x
6.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H
CVSS 2.x
5.5 MEDIUM
AV:N/AC:L/Au:S/C:P/I:N/A:P
RedHat/V2
RedHat/V3
Ubuntu

SAP NetWeaver AS for JAVA, versions - 7.20, 7.30, 7.31, 7.40, 7.50, allows an attacker authenticated as an administrator to connect over a network and submit a specially crafted XML file in the application because of missing XML Validation, this vulnerability enables attacker to fully compromise confidentiality by allowing them to read any file on the filesystem or fully compromise availability by causing the system to crash. The attack cannot be used to change any data so that there is no compromise as to integrity.

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
Netweaver_application_server_for_java Sap 7.20 (including) 7.20 (including)
Netweaver_application_server_for_java Sap 7.30 (including) 7.30 (including)
Netweaver_application_server_for_java Sap 7.31 (including) 7.31 (including)
Netweaver_application_server_for_java Sap 7.40 (including) 7.40 (including)
Netweaver_application_server_for_java Sap 7.50 (including) 7.50 (including)

Potential Mitigations

References