Patch Tuesday Analysis for December 2009

The first 3 bulletins affect primarily servers while the last 3 impact workstations and TS. A restart is required on all but the last one.

  • MS09-069 patches a vulnerability in the way LSASS (local security authority system service) handles specially crafted ISAKMP message via IPsec. If you’re not using IPsec, as a workaround, you can disable the service with a simple registry adjustment. Servers are the primary target and a restart is required to put the fix into action.
  • MS09-070 addresses two vulnerabilities with ADFS (active directory federation servers) enabled web servers. There are a couple of known issues with this patch so do your reading.
  • MS09-071 is rated critical for Server 2008 SP2 and moderate to important for other OSs. Usually upgrading to a SP improves the security but it this case the severity of the vulnerability was increased. One of the vulnerabilities is public. The vulnerabilities affect servers using Internet Authentication Service (Microsoft’s RADIUS server) when configured to use PEAP (Protected Extensible Authentication Protocol) with MS-CHAP v2 authentication. The faulty code exists on other machines so the patch is being issued for a wider range of machines.
  • MS09-072 is a cumulative update for IE that addresses multiple public vulnerabilities.
  • The workaround offered in MS09-073 disables the wordpad text converter. When the patch is applied a Word 6.0 file cannot be opened with Wordpad. This may make it necessary to install an Office Word viewer if Office is not installed. Some additional issues may appear before the dust settles on this one.
  • The Office Project vulnerability addressed in MS09-074 only works if a user opens a malicious Project file. We tell users not to open such files from an un-trusted source but it still happens…
BulletinExploit Types
/Technologies Affected
System Types AffectedExploit
details public?
/ Being exploited?
Comprehensive,
practical
workaround
available?
MS severity ratingProducts AffectedNotesRandy's recommendation
MS09-074

967183
Arbitrary code

/ Office Project
Workstations
Terminal Servers
No/NoNoCritical Project 2003
Project 2000
Project 2002
 Patch after testing
MS09-070

971726
Arbitrary code

/ Active Directory
Web Servers
No/NoNoImportant Server 2003
Server 2008
Restart Req'dPatch after testing
MS09-071

974318
Arbitrary code

/ Windows
Servers
Yes/NoYesCritical Win2000
XP
Win2003
Vista
Win2008
Restart Req'dPatch after testing
MS09-069

974392
Denial of service

/ Windows IPsec
Servers
No/NoYesImportant Win2000
XP
Server 2003
Restart Req'dPatch after testing
MS09-073

975539
Arbitrary code

/ Wordpad; Office
Workstations
Terminal Servers
No/NoYesImportant Win2000
XP
Office 2003
Server 2003
Office Converter Pack
Office 2002
Works 8.5
Restart Req'dPatch after testing
MS09-072

976325
Arbitrary code

/ Internet Explorer
Workstations
Terminal Servers
Yes/NoNoCritical Win2000
XP
Win2003
Vista
Win2008
Cumulative Update; Restart Req'dPatch after testing

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