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Zero Day Initiative Advisory 11-353

Zero Day Initiative Advisory 11-353
Posted Dec 22, 2011
Authored by Tipping Point | Site zerodayinitiative.com

Zero Day Initiative Advisory 11-353 - This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of HP Managed Printing Administration. Authentication is not required to exploit this vulnerability. The specific flaw exists within the MPAUploader.dll file. An extended length string can be passed into scripts within the management website on port 80 (the 'uploadfile' multipart form data 'filename' parameter in Default.asp) and ultimately to MPAUploader.dll. As a static stack allocation is used to store the buffer and the string length is not handled properly, a remote attacker may overwrite the stack and ultimately execute remote code.

tags | advisory, remote, arbitrary, asp
advisories | CVE-2011-4167
SHA-256 | 5cb9d7c743d97359533a6a87e86ceb46ffdb1c08c4b3556a2c176533ab6a35a5

Zero Day Initiative Advisory 11-353

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Hash: SHA1

ZDI-11-353 : HP Managed Printing Administration MPAUploader.dll Remote
Code Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-11-353
December 22, 2011

- -- CVE ID:
CVE-2011-4167

- -- CVSS:
9, AV:N/AC:L/Au:N/C:P/I:P/A:C

- -- Affected Vendors:

Hewlett-Packard



- -- Affected Products:

Hewlett-Packard Managed Printing Administration



- -- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 11697.
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 HP Managed Printing Administration.
Authentication is not required to exploit this vulnerability.

The specific flaw exists within the MPAUploader.dll file. An extended
length string can be passed into scripts within the management website
on port 80 (the 'uploadfile' multipart form data 'filename' parameter in
Default.asp) and ultimately to MPAUploader.dll. As a static stack
allocation is used to store the buffer and the string length is not
handled properly, a remote attacker may overwrite the stack and
ultimately execute remote code.

- -- Vendor Response:

Hewlett-Packard has issued an update to correct this vulnerability. More
details can be found at:

https://h20566.www2.hp.com/portal/site/hpsc/public/kb/docDisplay/?docId=emr_na-c03128469



- -- Disclosure Timeline:
2011-04-01 - Vulnerability reported to vendor
2011-12-22 - Coordinated public release of advisory

- -- Credit:
This vulnerability was discovered by:

* Andrea Micalizzi aka rgod



- -- 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/

Follow the ZDI on Twitter:

http://twitter.com/thezdi
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