(PT-2018-43) Positive Technologies Security Advisory
XXE Injection in SAP Business Process Automation by Redwood

Vulnerable software

SAP Business Process Automation by Redwood
Version: 9.x

Link:
https://www.sap.com/

Severity level

Severity level: Medium
Impact: Arbitrary file reading
Access Vector: Remote

CVSS v3:
Base Score: 5.4
Vector: (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L)

CVE: CVE-2018-2401

Vulnerability description

The specialists of the Positive Research center have detected an XXE Injection vulnerability in SAP Business Process Automation by Redwood.

A vulnerability in SAP Business Process Automation (BPA), due to insufficient validation of XML documents accepted from untrusted sources, allows attackers to conduct XML External Entity (XXE) attacks and read arbitrary files.

How to fix

Use vendor's advisory:
https://launchpad.support.sap.com/#/notes/2596766

Advisory status

16.03.2017 - Vendor gets vulnerability details
13.03.2018 - Vendor releases fixed version and details
26.12.2018 - Public disclosure

Credits

The vulnerability was detected by Alexandr Shvetsov, Positive Research Center (Positive Technologies Company)

References

http://en.securitylab.ru/lab/PT-2018-43

Reports on the vulnerabilities previously discovered by Positive Research:

https://www.ptsecurity.com/
https://en.securitylab.ru/lab/

About Positive Technologies

Positive Technologies is a leading digital security firm with over 15 years of experience in 360° protection of critical IT systems against the most advanced cyberthreats. State-of-the-art solutions are developed at the company's research center—one of the largest in Europe. Positive Technologies experts have helped to identify and fix over 250 zero-day vulnerabilities in products from Cisco, Google, Honeywell, Huawei, Microsoft, Oracle, SAP, Schneider Electric, Siemens, and others, earning a reputation for world-class expertise in protection of devices and infrastructures at all scales from ATMs to nuclear power stations. Findings by Positive Technologies researchers are used for updating the MaxPatrol knowledge base and for development of security solutions including PT Application Firewall, PT Application Inspector, MaxPatrol. These products allow securing web applications, evaluating network protection, blocking attacks in real time, ensuring compliance with industry and national standards, and training security specialists. Positive Technologies is the organizer of the annual Positive Hack Days international forum and security competition.