PT-2016-19: Information Disclosure in SAP NetWeaver

Vulnerable software

SAP NetWeaver
Version: 7.x


Severity level

Severity level: Medium
Impact: Information Disclosure
Access Vector: Remote

CVSS v3:
Base Score: 5.3
Vector: (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)

CVE: not assigned

Software description

SAP NetWeaver is a service-oriented integration platform and is the technical foundation for many SAP applications since the SAP Business Suite.

Vulnerability description

The specialists of the Positive Research center have detected an Information Disclosure vulnerability in SAP NetWeaver.

Vulnerability in the MembersApp component allows attackers to enumerate usernames by observing timing differences between responses sent for valid and invalid usernames.

How to fix

Use vendor's advisory:
SAP Security Note 2372188

Advisory status

15.09.2016 - Vendor gets vulnerability details
14.03.2017 - Vendor releases fixed version and details
20.12.2017 - Public disclosure


The vulnerability was detected by Mikhail Klyuchnikov, Positive Research Center (Positive Technologies Company)


Reports on the vulnerabilities previously discovered by Positive Research:

About Positive Technologies

Positive Technologies is a leading provider of vulnerability assessment, compliance management and threat analysis solutions to more than 1,000 global enterprise clients. Our solutions work seamlessly across your entire business: securing applications in development; assessing your network and application vulnerabilities; assuring compliance with regulatory requirements; and blocking real-time attacks. Our commitment to clients and research has earned Positive Technologies a reputation as one of the foremost authorities on SCADA, Banking, Telecom, Web Application and ERP security, and distinction as the #1 fastest growing Security and Vulnerability Management firm in 2012, as shown in an IDC report*. To learn more about Positive Technologies please visit

*Source: IDC Worldwide Security and Vulnerability Management 2013-2017 Forecast and 2012 Vendor Shares, doc #242465, August 2013. Based on year-over-year revenue growth in 2012 for vendors with revenues of $20M+

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