CYBSEC - Security Pre-Advisory: SAP Internet Graphics Service (IGS) Remote Denial of Service

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(The following advisory is also available in PDF format for download at: )


Pre-Advisory Name: SAP Internet Graphics Service (IGS) Remote Denial of Service

Vulnerability Class: Design Flaw

Release Date: 08/10/2006

Affected Applications:
* SAP IGS 6.40 Patchlevel <= 15
* SAP IGS 7.00 Patchlevel <= 3

Affected Platforms:
* AIX 64 bits
* HP-UX on IA64 64bit
* HP-UX on PA-RISC 64bit
* Linux on IA64 64bit
* Linux on Power 64bit
* Linux on x86_64 64bit
* Linux on zSeries 64bit
* OS/400 V5R2M0
* Solaris on SPARC 64bit
* TRU64 64bit

Local / Remote: Remote

Severity: Medium

Author: Mariano Nuñez Di Croce

Vendor Status:
* Confirmed, update released.

Reference to Vulnerability Disclosure Policy:

Product Overview:
"The IGS provides a server architecture where data from an SAP System or other sources can be used to generate graphical or non-graphical output."

It is important to note that IGS is installed and activated by default with the Web Application Server (versions >= 6.30)

Vulnerability Description:
A specially crafted HTTP request can derive in the finalization of SAP IGS Service.

Technical Details:
Technical details will be released three months after publication of this pre-advisory. This was agreed upon with SAP to allow their customers to upgrade affected software prior to technical knowledge
been publicly available.

Successful exploitation of this vulnerability allows to remotely shutdown SAP IGS service.

SAP has released patches to address this vulnerability. Affected customers should apply the patches immediately.
More information can be found on SAP Note 968423.

Vendor Response:
* 06/02/2006: Initial Vendor Contact.
* 06/09/2006: Vendor Confirmed Vulnerability.
* 07/03/2006: Vendor Releases Update for version 6.40.
* 07/13/2006: Vendor Releases Update for version 7.00.
* 08/10/2006: Pre-Advisory Public Disclosure.

Special Thanks:
Thanks goes to Carlos Diaz and Victor Montero.

Contact Information:
For more information regarding the vulnerability feel free to contact the author at mnunez {at} Please bear in mind that technical details will be disclosed to the general public three
months after the release of this pre-advisory.

For more information regarding CYBSEC:
(c) 2006 - CYBSEC S.A. Security Systems
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