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Category:   Application (Directory)  >   Novell eDirectory Vendors:   Novell
Novell eDirectory Buffer Overflow in RelativeToFullDN Parsing Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1027426
SecurityTracker URL:  http://securitytracker.com/id/1027426
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Aug 23 2012
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 8.8.6.5
Description:   A vulnerability was reported in Novell eDirectory. A remote user can execute arbitrary code on the target system.

A remote user can send specially crafted LDAP request to trigger a buffer overflow and execute arbitrary code on the target system. The code will run with the privileges of the target service.

The vendor was notified on December 28, 2011.

An anonymous researcher reported this vulnerability via TippingPoint's Zero Day Initiative.

Impact:   A remote user can execute arbitrary code on the target system.
Solution:   The vendor has issued a fix (8.8.6.5) [in April 2012].

The vendor's advisory is available at:

http://www.novell.com/support/kb/doc.php?id=7009947

Vendor URL:  www.novell.com/support/kb/doc.php?id=7009947 (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Red Hat Enterprise), Linux (SuSE), UNIX (AIX), UNIX (HP/UX), UNIX (Solaris - SunOS), Windows (2000), Windows (2003)

Message History:   None.


 Source Message Contents

Subject:  [Full-disclosure] ZDI-12-146 : Novell eDirectory RelativeToFullDN Parsing Remote Code Execution Vulnerability


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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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