ZDI-10-196: SAP Crystal Reports JobServer GIOP Request Remote Code Execution Vulnerability

[ZDI Disclosures <zdi-disclosures () tippingpoint com>]

ZDI-10-196: SAP Crystal Reports JobServer GIOP Request Remote Code Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-10-196
October 12, 2010

-- CVSS:
10, (AV:N/AC:L/Au:N/C:C/I:C/A:C)

-- Affected Vendors:
SAP

-- Affected Products:
SAP Crystal Reports

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 10482.
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 Crystal Reports. Authentication is not
required to exploit this vulnerability.

The specific flaw exists within the JobServer.exe process which listens
by default on several TCP ports above 1024. When parsing a GIOP request,
the process trusts a user-supplied 32-bit value and allocates a buffer
on the heap. The process then proceeds to copy the string following this
value from the packet until it finds a NULL byte. By crafting a
specifically sized packet a remote attacker can overflow the buffer and
gain code execution under the context of the SYSTEM user.

-- Vendor Response:
SAP states:
A solution was provided via SAP note 1509604
(https://websmp130.sap-ag.de/sap/support/notes/1509604)

-- Disclosure Timeline:
2010-07-20 - Vulnerability reported to vendor
2010-10-12 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * AbdulAziz Hariri

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