TippingPoint Zero Day Initiative

SAP Netweaver ABAP msg_server.exe Parameter Name Remote Code Execution Vulnerability

ZDI-12-112: June 28th, 2012

CVSS Score

Affected Vendors

Affected Products


TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 12407. For further product information on the TippingPoint IPS:

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:

Disclosure Timeline

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


This vulnerability was discovered by: