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Zero Day Initiative Advisory 12-146

Zero Day Initiative Advisory 12-146
Posted Aug 23, 2012
Authored by Tipping Point | Site zerodayinitiative.com

Zero Day Initiative Advisory 12-146 - This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Novell eDirectory. Authentication is not required to exploit this vulnerability. The specific flaw exists within how the service handles a specially formatted LDAP request. When handling a particular set of commands, the server will copy a string described in the packet into a statically sized buffer without validating it's length. This leads to a stack-based overflow and as such can be exploited to achieve code execution under the context of the application.

tags | advisory, remote, overflow, arbitrary, code execution
MD5 | 1630428462988f1fb7918a69918e1fa9

Zero Day Initiative Advisory 12-146

Change Mirror Download

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ZDI-12-146 : Novell eDirectory RelativeToFullDN Parsing Remote Code
Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-12-146
August 22, 2012

- -- CVE ID:


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

- -- Affected Vendors:
Novell


- -- Affected Products:
Novell eDirectory


- -- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 12472.
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 Novell eDirectory. Authentication is not
required to exploit this vulnerability.

The specific flaw exists within how the service handles a specially
formatted LDAP request. When handling a particular set of commands, the
server will copy a string described in the packet into a statically sized
buffer without validating it's length. This leads to a stack-based overflow
and as such can be exploited to achieve code execution under the context of
the application.

- -- Vendor Response:
Novell has issued an update to correct this vulnerability. More details can
be found at:
http://www.novell.com/support/kb/doc.php?id=7009947


- -- Disclosure Timeline:
2011-10-28 - Vulnerability reported to vendor
2012-08-22 - Coordinated public release of advisory


- -- Credit:
This vulnerability was discovered by:
* Anonymous


- -- 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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