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ZDI-11-113: Zend Server Java Bridge Design Flaw Remote Code Execution Vulnerability
From: ZDI Disclosures <zdi-disclosures () tippingpoint com>
Date: Mon, 28 Mar 2011 16:20:37 +0000

ZDI-11-113: Zend Server Java Bridge Design Flaw Remote Code Execution Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-11-113

March 28, 2011

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

-- Affected Vendors:
Zend

-- Affected Products:
Zend Zend Server

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 10610. 
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 Zend Server. Authentication is not required
to exploit this vulnerability. 

The specific flaw exists within the Zend Java Bridge v3.1 component of
the Zend Server framework. The javamw.jar service accepts TCP requests
on port 10001 by default. With nothing more than the knowledge of the
proprietary communication protocol used by the Zend Server Java Bridge,
it is possible to send arbitrary Java code to javamw.jar service and
remotely execute these commands under the context of the user running
the web server process.

-- Vendor Response:
Zend states:
Zend Server Java Bridge Hotfix
http://www.zend.com/en/products/server/downloads

Mention and notification can also be found here:
http://www.zend.com/en/products/server/updates

-- Disclosure Timeline:
2010-09-30 - Vulnerability reported to vendor
2011-03-28 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Luca Carettoni

-- 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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