Microsoft August 2009 Black Tuesday Overview
Last Updated: 2009-08-13 17:20:37 UTC
by Swa Frantzen (Version: 1)
Overview of the August 2009 Microsoft patches and their status.
|#||Affected||Contra Indications||Known Exploits||Microsoft rating||ISC rating(*)|
|MS09-036||Request handling vulnerability leads to a DoS opportunity.|
|KB 970957||Active exploitation attempts according to Microsoft.||Severity:Important
|MS09-037||Multiple vulnerabilities allow for arbitrary code execution. Fixes issues in a librarry used by Outlook Express, Media Player, DHMTL ActiveX controls, and MSWebDVD ActiveX control.
For a description of the relationship between MS09-037, MS09-035 , MS09-034 and MS09-032 see the updated SA973882.
Replaces MS08-048 and MS07-047.
|ATL (Active Template Library)
|KB 973908||CVE-2008-0015 is actively exploited.
CVE-2009-0901 and CVE-2009-2493 are already known from MS09-035.
|MS09-038||Multiple input validation errors in AVI file processing allows arbitrary code to be executed with the rights of the logged on user.|
|KB 971557||No known exploits||Severity:Critical
|MS09-039||Multiple vulnerabilities in WINS servers allow random code execution. Best practice is to block WINS from traversing a firewall (block port 42 TCP and UDP).|
|KB 969883||No known exploits||Severity:Critical
A validation vulnerability allows an attacker to execute arbitrary code with system privileges.
|MSMQ (Message Queing Service)
|KB 971032||No known exploits.||Severity:Important
A double free error allows privilege escalation or Denial of Service problems.
|KB 971657||No known exploits||Severity:Important
|MS09-042||NTLM authentication reflection shows up in the telnet client, allowing for arbitrary code execution with the rights of the logged on user. The reflection requires the firewall on the client machine to not block the NTLM authenticated ports.|
|KB 960859||exploit code exists for similar problems in NTLM||Severity:Important
Multiple vulnerabilities in Office Web ActiveX controls allow arbitrary code execution.
|Office Web Components
|KB 957638||CVE-2009-1136 is actively exploited according to Microsoft.||Severity:Critical
|MS09-044||Multiple heap overflows allow arbitrary code execution in the remote desktop client with the rights of the logged-on user.
Also affect the remote desktop client for Mac.
|KB 970927||No known exploits||Severity:Critical
We appreciate updates
US based customers can call Microsoft for free patch related support on 1-866-PCSAFETY
- We use 4 levels:
- PATCH NOW: Typically used where we see immediate danger of exploitation. Typical environments will want to deploy these patches ASAP. Workarounds are typically not accepted by users or are not possible. This rating is often used when typical deployments make it vulnerable and exploits are being used or easy to obtain or make.
- Critical: Anything that needs little to become "interesting" for the dark side. Best approach is to test and deploy ASAP. Workarounds can give more time to test.
- Important: Things where more testing and other measures can help.
- Less Urgent: Typically we expect the impact if left unpatched to be not that big a deal in the short term. Do not forget them however.
- The difference between the client and server rating is based on how you use the affected machine. We take into account the typical client and server deployment in the usage of the machine and the common measures people typically have in place already. Measures we presume are simple best practices for servers such as not using outlook, MSIE, word etc. to do traditional office or leisure work.
- The rating is not a risk analysis as such. It is a rating of importance of the vulnerability and the perceived or even predicted threat for affected systems. The rating does not account for the number of affected systems there are. It is for an affected system in a typical worst-case role.
- Only the organization itself is in a position to do a full risk analysis involving the presence (or lack of) affected systems, the actually implemented measures, the impact on their operation and the value of the assets involved.
- All patches released by a vendor are important enough to have a close look if you use the affected systems. There is little incentive for vendors to publicize patches that do not have some form of risk to them
(**): If installed.
(***): Critical of ISA servers
Swa Frantzen -- Section 66