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CVE-2018-2492: SAP NetWeaver Java may accept forged SAML messages

CVE-2018-2492 · published 7 years ago

Summary

The SAML feature in SAP NetWeaver Application Server for Java does not fully check XML data that comes from untrusted sources. An attacker could craft malicious XML and potentially bypass authentication or gain unauthorized access. Upgrade to the latest released versions or apply the provided patches to resolve the issue.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software

Vendor	Product	Affected versions
sap	netweaver_application_server_java	7.20 7.30 7.31 7.40 7.50 `cpe:2.3:a:sap:netweaver_application_server_java:7.20:::::::*`

Original advisory text

SAML 2.0 functionality in SAP NetWeaver AS Java, does not sufficiently validate XML documents received from an untrusted source. This is fixed in versions 7.2, 7.30, 7.31, 7.40 and 7.50.

References

http://www.securityfocus.com/bid/106153 Third Party Advisory VDB Entry
https://launchpad.support.sap.com/#/notes/2642680 Permissions Required
https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=508559699 Vendor Advisory

Fix within

Internet-facing 60 days

Internal At next upgrade

Not known to be exploited
Needs hands-on effort to exploit (estimated)
Gives an attacker partial control (estimated)

Severity

7.1 High

Exploitation

1% chance of attack within 30 days

Type

CWE-611XML External Entity (XXE)

Timeline

Published11 Dec 2018

Updated31 Oct 2026

First seen29 Sep 2026

Sources

CVE-2018-2492 · NVD

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