Microsoft Remote Procedure Call (RPC) Server Vulnerability
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Several people called me, in hysterical panic telling me their computers
restarted, I was on LINUX at the moment and rebooted
to XP to see how I could help them, to my amazment my computer restarted
too!!!
this was an ATTACK!!!! so I disabled the RPC services and I am posting this
for the people who are looking for solutions.
What I did was firewalled XP, and disabled one of the RPC services and made
the other one to not be able to restart the computer.
Then I did an XP update from the windows update site.
Now my ps has not rebooted... I think this is creating GLOBAL chaos!!!
Kenny
www.computerboom.net
www.talentgrid.com
Privacy and Legal Notice
INFORMATION BULLETIN
L-126: Microsoft Remote Procedure Call (RPC) Server Vulnerability
[Microsoft Security Bulletin MS01-041]
July 30, 2001 17:00 GMT
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PROBLEM: A malformed RPC request can cause a denial of service.
PLATFORM: Those running any of the following products:
a.. Microsoft Exchange Server 5.5
b.. Microsoft Exchange Server 2000
c.. Microsoft SQL Server 7.0
d.. Microsoft SQL Server 2000
e.. Microsoft Windows NT 4.0
f.. Microsoft Windows 2000
DAMAGE: The level of damage could range from minor (e.g., the service
temporarily hanging) to major (e.g., the service failing in a way that would
require the entire system to be restarted).
SOLUTION: Apply the patches and proper firewalling as indicated in the
bulletin.
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VULNERABILITY
ASSESSMENT: The risk is LOW. Proper firewalling would help minimize
the possibility of attacks by Internet-based users.
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LINKS:
CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/l-126.shtml
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[***** Start Microsoft Security Bulletin MS01-041 *****]
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Title: Malformed RPC Request Can Cause Service Failure
Date: 26 July 2001
Software: Exchange Server 5.5, Exchange Server 2000,
SQL Server 7.0, SQL Server 2000, Windows NT 4.0,
Windows 2000
Impact: Denial of service
Bulletin: MS01-041
Microsoft encourages customers to review the Security Bulletin at:
http://www.microsoft.com/technet/sec...n/MS01-041.asp
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Issue:
======
Several of the RPC servers associated with system services in
Microsoft Exchange, SQL Server, Windows NT 4.0 and Windows 2000 do not
adequately validate inputs, and in some cases will accept invalid
inputs that prevent normal processing. The specific input values at
issue here vary from RPC server to RPC server.
An attacker who sent such inputs to an affected RPC server could
disrupt its service. The precise type of disruption would depend on
the specific service, but could range in effect from minor (e.g., the
service temporarily hanging) to major (e.g., the service failing in a
way that would require the entire system to be restarted).
Mitigating Factors:
====================
- Proper firewalling would help minimize an affected system's
exposure to attack by Internet-based users. In general, a
firewall should block access to all RPC services except
those that are specifically intended for use by untrusted users.
Patch Availability:
===================
- A patch is available to fix this vulnerability. Please read the
Security Bulletin
http://www.microsoft.com/technet/sec...n/ms01-041.asp
for information on obtaining this patch.
Acknowledgment:
===============
- Bindview's Razor Team (http://razor.bindview.com)
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FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY
NOT APPLY.
[***** End Microsoft Security Bulletin MS01-041 *****]
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CIAC wishes to acknowledge the contributions of Microsoft for the
information contained in this bulletin.
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UCRL-MI-119788
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