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                                   CERT-Renater

                        Note d'Information No. 2009/VULN492
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DATE                      : 02/12/2009

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Systems running Novell eDirectory.

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http://www.novell.com/support/viewContent.do?externalId=7004912
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Security Vulnerability: Novell eDirectory Heap-based Buffer Overflow

This document (7004912) is provided subject to the disclaimer at the
end of this document.

Environment

Novell eDirectory 8.7.3.10 ftf1 and prior for All Platforms
Novell eDirectory 8.8.5 ftf1 and prior for All Platforms


Situation

Novell eDirectory permits unauthenticated users to query the server for
information about specific objects.  The user can send a service request
(NDS Verb 0x1) that has integer used in a memory allocation. A large integer
can result in an integer wrap and a subsequent allocation returning an
insufficient buffer, resulting in a heap-based buffer overflow.

Successful exploitation would grant an attacker the same privileges eDirectory
is using and/or cause a crash of the eDirectory service resulting in a denial
of service.


Resolution

This vulnerability is resolved by applying the following:

For eDirectory 8.7.3.X, apply eDirectory 8.7.3.10 ftf2.
For eDirectory 8.8.X, apply eDirectory 8.8.5.2.

Patches are available at http://download.novell.com


Status

Reported to Engineering
Security Alert


Additional Information
This vulnerability was discovered and researched by Chris Valasek and
John McDonald of the IBM X-Force.

http://www.iss.net/threats/356.html

CVE-2009-0895
Document
Document ID:	7004912
Creation Date:	11-23-2009
Modified Date:	12-01-2009
Novell Product:	eDirectory
Disclaimer

The Origin of this information may be internal or external to Novell.
Novell makes all reasonable efforts to verify this information. However,
the information provided in this document is for your information only.
Novell makes no explicit or implied claims to the validity of this
information.
Any trademarks referenced in this document are the property of their
respective owners. Consult your product manuals for complete trademark
information.
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