17th Feb 2003 [SBWID-5994]
COMMAND
Lotus Domino Web Server iNotes Overflow
SYSTEMS AFFECTED
Lotus Domino Release 6.0
PROBLEM
Thanks to David Litchfield [david@ngssoftware] and Mark Litchfield
[[email protected]] of NGSSoftware Insight Security Research,
advisory [#NISR17022003b] :
Lotus Domino and Notes together provide a featured enterprise
collaboration system with Domino providing application server services.
iNotes provides web based messaging facilities.
Details
*******
iNotes suffers from a remotley exploitable buffer overrun when an
attacker provides an overly long value for the s_ViewName/Foldername
options of the PresetFields parameter when requesting web based mail
services. Any code supplied would run in the security context of the
account running the Domino Web Services.
SOLUTION
Fix Information
***************
NGSSoftware alerted IBM/Lotus to this issue on the 14th of January
2002. IBM Lotus Notes and Domino Release 6.0.1 is now available and
being marketed as the first maintenance release. IBM say if customers
haven't already upgraded or migrated to Notes and Domino 6, now is the
time to move and start reaping the benefits of this existing and highly
praised release. Release 6.0.1 includes fixes to enhance the quality
and reliability of the Notes and Domino 6 products. It does not however
mention any security issues, and NGS would strongly advise to upgrade
as soon as possible not to just to "reap the benefits" but to secure
the server and data against possible attacks.
The upgrade / patch can be obtained from
http://www14.software.ibm.com/webapp/download/search.jsp?q=&cat=&pf=&k=&dt=&
go=y&rs=ESD-NOTECLNTi&S_TACT=&S_CMP=&sb=r
A check for this issue has been added to DominoScan R2, a comprehensive
automated intelligent assessment tool for Lotus Domino Servers of which
more information is available from the NGSSite
http://www.ngssoftware.com/software/dominoscan.html
Further Information
*******************
For further information about the scope and effects of buffer overflows,
please see
http://www.ngssoftware.com/papers/non-stack-bo-windows.pdf
http://www.ngssoftware.com/papers/ntbufferoverflow.html
http://www.ngssoftware.com/papers/bufferoverflowpaper.rtf
http://www.ngssoftware.com/papers/unicodebo.pdf
About NGSSoftware
*****************
NGSSoftware design, research and develop intelligent, advanced application
security assessment scanners. Based in the United Kingdom, NGSSoftware have
offices in the South of London and the East Coast of Scotland. NGSSoftware's
sister company NGSConsulting, offers best of breed security consulting
services, specialising in application, host and network security
assessments.
http://www.ngssoftware.com/
http://www.ngsconsulting.com/
Telephone +44 208 401 0070
Fax +44 208 401 0076
[email protected]