full-disclosure - ZDI-12-112 : SAP Netweaver ABAP msg_server.exe Parameter Name Remote Code Execution Vulnerability

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Date: Thu, 28 Jun 2012 19:15:48 +0000
From: ZDI Disclosures <zdi-disclosures@...pingpoint.com>
To: "'full-disclosure@...ts.grok.org.uk'" <full-disclosure@...ts.grok.org.uk>, 
	"'bugtraq@...urityfocus.com'" <bugtraq@...urityfocus.com>
Cc: ZDI Disclosures <zdi-disclosures@...com>
Subject: ZDI-12-112 : SAP Netweaver ABAP msg_server.exe
 Parameter Name Remote Code Execution Vulnerability

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ZDI-12-112 : SAP Netweaver ABAP msg_server.exe Parameter Name Remote Code
Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-12-112
June 28, 2012

- -- CVE ID:

- -- CVSS:
9, AV:N/AC:L/Au:N/C:P/I:P/A:C

- -- Affected Vendors:
SAP

- -- Affected Products:
SAP NetWeaver

- -- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 12407.
For further product information on the TippingPoint IPS, visit:

    http://www.tippingpoint.com

- -- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of SAP NetWeaver ABAP. Authentication is not
required to exploit this vulnerability.

The specific flaw exists within the way SAP NetWeaver handles packages with
opcode 0x43. If a package with sub opcode 0x4 contains a Parameter Name
string NetWeaver will eventually write a \x00 byte onto the stack to mark
the end of the string. The location of this null byte is dependent on user
supplied data and the resulting stack corruption can lead to remote code
execution under the context of the running processs.

- -- Vendor Response:
SAP has issued an update to correct this vulnerability. More details can be
found at:
http://www.sdn.sap.com/irj/sdn/index?rid=/webcontent/uuid/c05604f6-4eb3-2d1
0-eea7-ceb666083a6a#section40

- -- Disclosure Timeline:
2011-10-28 - Vulnerability reported to vendor
2012-06-28 - Coordinated public release of advisory

- -- Credit:
This vulnerability was discovered by:
* e6af8de8b1d4b2b6d5ba2610cbf9cd38

- -- About the Zero Day Initiative (ZDI):
Established by TippingPoint, The Zero Day Initiative (ZDI) represents 
a best-of-breed model for rewarding security researchers for responsibly
disclosing discovered vulnerabilities.

Researchers interested in getting paid for their security research
through the ZDI can find more information and sign-up at:

    http://www.zerodayinitiative.com

The ZDI is unique in how the acquired vulnerability information is
used. TippingPoint does not re-sell the vulnerability details or any
exploit code. Instead, upon notifying the affected product vendor,
TippingPoint provides its customers with zero day protection through
its intrusion prevention technology. Explicit details regarding the
specifics of the vulnerability are not exposed to any parties until
an official vendor patch is publicly available. Furthermore, with the
altruistic aim of helping to secure a broader user base, TippingPoint
provides this vulnerability information confidentially to security
vendors (including competitors) who have a vulnerability protection or
mitigation product.

Our vulnerability disclosure policy is available online at:

    http://www.zerodayinitiative.com/advisories/disclosure_policy/

Follow the ZDI on Twitter:

    http://twitter.com/thezdi

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