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Network Security Focus-Microsoft
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WSUS overriding GPO for reboot

Subject: WSUS overriding GPO for reboot
Date: Tue, 12 Jul 2005 11:32:22 +0200
Hello, 

I'll put this here because I regard a spontaneous reboot of a live server as
a security issue (Kind of a DOS):

I approved some bugfixes for Server 2003 in WSUS.

In the GPO which applies to the Servers I set "no automatical reboot", no
other GPO overrides this.

Now all XP and 2000 Clients got a "Computer is going to restart now [OK]"
messagebox while the servers simply restarted without any warning.

Windowsupdate.log says:

2005-07-12      09:00:50        1020    494     AU      ##  END  ##  AU:
Search for updates [CallId = {B669678A-F994-43C0-861D-0203CDCDC6A2}]
2005-07-12      09:00:50        1020    494     AU      #############
2005-07-12      09:00:53        1020    494     Report  REPORT EVENT:
{A833EE07-F822-43BA-A7FA-E47D26C992E1}  2005-07-12 09:00:48+0200        1
191     101     {90B61E13-9028-4348-86B0-CED032EFBEF6}  102     0
AutomaticUpdates        Success Content Install Installation successful and
restart required for the following update: Sicherheitsupdate für Windows
Server 2003 (KB896426)
2005-07-12      09:00:53        1020    494     Report  REPORT EVENT:
{D0512843-F412-4203-A9A4-B142E4403FA7}  2005-07-12 09:00:48+0200        1
194     102     {00000000-0000-0000-0000-000000000000}  0       0
AutomaticUpdates        Success Content Install Restart Required: To
complete the installation of the following updates, the computer will be
restarted within 5 minutes:  - Sicherheitsupdate für Windows Server 2003
(KB896426)
2005-07-12      09:01:02        1020    acc     AU      AU found 1 sessions
to launch client into
2005-07-12      09:01:02        1020    acc     AU      Launched new AU
client for directive 'Reboot Pending', session id = 0x1
2005-07-12      09:01:02         752    1438    Misc    ===========  Logging
initialized (build: 5.8.0.2469, tz: +0200)  ===========
2005-07-12      09:01:02         752    1438    Misc      = Process:
C:\WINDOWS\system32\wuauclt.exe
2005-07-12      09:01:02         752    1438    AUClnt  Launched Client UI
process
2005-07-12      09:01:03         752    1438    AUClnt  AU client got new
directive = 'Reboot Pending', serviceId =
{3DA21691-E39D-4DA6-8A4B-B43877BCB1B7}, return = 0x00000000
2005-07-12      09:01:03        1020    df4     AU      AU setting client
response for sessionId 0x1 to 'Pending'
2005-07-12      09:01:17        1020    acc     AU      AU found 1 sessions
to launch client into
2005-07-12      09:15:52        1020    928     PT      Initializing simple
targeting cookie, clientId = a9d2ba6e-32c1-447a-91bf-a851ccfc3ac2, target
group = Server, DNS name = h2oa1000.intranet.h2o-gmbh.de
2005-07-12      09:15:52        1020    928     PT        Server URL =
http://h2oa1001:8530/SimpleAuthWebService/SimpleAuth.asmx
2005-07-12      09:15:52        1020    928     Report  Uploading 1 events
using cached cookie, reporting URL =
http://h2oa1001:8530/ReportingWebService/ReportingWebService.asmx
2005-07-12      09:15:52        1020    928     Report  Reporter
successfully uploaded 1 events.
2005-07-12      09:47:48         752    1438    AUClnt  AU client got new
directive = 'Shutdown', serviceId = {3DA21691-E39D-4DA6-8A4B-B43877BCB1B7},
return = 0x00000000
2005-07-12      09:47:48         752    1438    AUClnt  AU client reboot
notification: user clicked Restart Later
2005-07-12      09:47:48        1020    dec     AU      AU setting client
response for sessionId 0x1 to 'Pending'
2005-07-12      09:47:48        1020    dec     AU      Changing existing AU
client directive from 'Shutdown' to 'Reboot Pending', session id = 0x1
2005-07-12      09:48:02        1020    acc     AU      AU found 1 sessions
to launch client into
2005-07-12      09:48:02        1020    acc     AU      Launched new AU
client for directive 'Reboot Pending', session id = 0x1
2005-07-12      09:48:03        4424    17c4    Misc    ===========  Logging
initialized (build: 5.8.0.2469, tz: +0200)  ===========
2005-07-12      09:48:03        4424    17c4    Misc      = Process:
C:\WINDOWS\system32\wuauclt.exe
2005-07-12      09:48:03        4424    17c4    AUClnt  Launched Client UI
process
2005-07-12      09:48:03        4424    17c4    AUClnt  AU client got new
directive = 'Reboot Pending', serviceId =
{3DA21691-E39D-4DA6-8A4B-B43877BCB1B7}, return = 0x00000000
2005-07-12      09:48:03        1020    e14     AU      AU setting client
response for sessionId 0x1 to 'Pending'
2005-07-12      09:48:17        1020    acc     AU      AU found 1 sessions
to launch client into
2005-07-12      10:02:55        1020    acc     AU      WARNING: Initiating
reboot since no user logged on
2005-07-12      10:02:55        1020    acc     AU      AU invoking
RebootSystem (OnRebootNow)
2005-07-12      10:02:55        1020    acc     Misc    WARNING: SUS Client
is rebooting system.
2005-07-12      10:02:55        1020    acc     AU      AU rebooting machine
since no user is logged on and reboot is required.
2005-07-12      10:03:04        1020    acc     AU      WARNING: Initiating
reboot since no user logged on
2005-07-12      10:03:04        1020    acc     AU      AU invoking
RebootSystem (OnRebootNow)
2005-07-12      10:03:04        1020    acc     Misc    WARNING: Failed to
reboot system, hr=8007045B.
2005-07-12      10:03:04        1020    acc     AU      WARNING:
RebootSystem failed, error = 0x8007045B
2005-07-12      10:03:04        1020    acc     AU      AU invoking
RebootSystem (OnRebootRetry)
2005-07-12      10:03:04        1020    acc     Misc    WARNING: SUS Client
is rebooting system.
2005-07-12      10:03:14        1020    acc     AU      AU invoking
RebootSystem (OnRebootRetry)
2005-07-12      10:03:14        1020    acc     Misc    WARNING: Failed to
reboot system, hr=800706BB.
2005-07-12      10:03:24        1020    acc     AU      AU invoking
RebootSystem (OnRebootRetry)
2005-07-12      10:03:24        1020    acc     Misc    WARNING: Failed to
reboot system, hr=800706BB.
2005-07-12      10:03:35        1020    acc     Service *********
2005-07-12      10:03:35        1020    acc     Service **  END  **
Service: Service exit [Exit code = 0x240001]
2005-07-12      10:03:35        1020    acc     Service *************
2005-07-12      10:09:09        1048    c68     Misc    ===========  Logging
initialized (build: 5.8.0.2469, tz: +0200)  ===========
2005-07-12      10:09:09        1048    c68     Misc      = Process:
C:\WINDOWS\System32\svchost.exe

Eventlog says:

The process winlogon.exe has initiated the restart of <computer name> for
the following reason: No title for this reason could be found.
Minor Reason: 0x80020002
Shutdown Type: reboot

According to eventid.net this message is generated when SUS is forcing a
computer to reboot.

Does anybody have an explanation or can point me anywhere where I can find
one? MS KB didn't help me yet.

Regards,

DD



______________________________________ 
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IT Operator 
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Telefax +49 (0) 7627 9239 - 200 
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______________________________________ 

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