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ZDI-10-196: SAP Crystal Reports JobServer GIOP Request Remote Code Execution Vulnerability
From: ZDI Disclosures <zdi-disclosures () tippingpoint com>
Date: Tue, 12 Oct 2010 11:18:20 -0500

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

-- 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/

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    http://twitter.com/thezdi


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