August 2011 - Posts

ISC Diary | Internet Worm in the Wild
Internet Worm in the Wild
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Published: 2011-08-29,
Last Updated: 2011-08-29 12:53:18 UTC
by Kevin Shortt (Version: 1)
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Well, the word is out. Morto, the latest Internet worm has arrived and clearly has been working itself around for a while.

After reading the write ups available, it would appear for now, that the network flood is the most substantial consequence for any network with infected hosts.

Prevention looks to be easy. I would not suspect any of our readers to fall victim to this worm, as it appears to take advantage of systems not complying to best practices. Though that is not a proven fact yet, so stay vigilant.

The Microsoft Malware Prevention Center has a detailed write up on Morto here. [1] Check it out and feel free to send us any samples via the contact form here.

As always give us your comments and provide feedback on what is happening out there.


Thanks to Don for keeping us up to date. MMPC has a new Morto variant write up. Check it out here. [2]

Keep the intel coming folks. I'll continue to update as more info becomes available.


ISC Handler on Duty

Adobe August 2011 Black Tuesday Overview

Published: 2011-08-09,
Last Updated: 2011-08-10 11:57:37 UTC
by Swa Frantzen (Version: 2)
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Although none of us seems to have seen any warning, Adobe has released 5 bulletins today.

These update Adobe products to the following versions:

  • Adobe Shockwave Player
  • Flash Media Server 4.0.3 (or 3.5.7 if you are using 3.x)
  • Adobe Flash Player
    • Android
    • Windows, OS X, Solaris, Linux
  • Adobe Air 2.7.1
  • Photoshop version is not changed by the update.
  • Robohelp version is not changed, but version is not vulnerable.

Overview of the August 9th 2011 Adobe Patches.

# Affected Known Exploits Adobe rating
APSB11-19 Multiple memory corruption vulnerabilities in the shockwave player allow random code execution.
Shockwave Player

TBD Critical
APSB11-20 A memory corruption vulnerability in the Flash media Server (FMS) allows a denial of service.
Flash Media Server (FMS)

TBD Critical
APSB11-21 Multiple vulnerabilities in flash player allow random code execution.
Flash Player
Adobe AIR


Adobe claims to not be aware of any exploits in the wild against the vulnerabilities are patched in Flash Player



APSB11-22 A memory corruption vulnerability in Photoshop CS5, CS5.1 and earlier allows random code execution.

TBD Critical
APSB11-23 A cross site scripting (XSS) vulnerability attack against RoboHelp installations.

TBD Important

Please note that adobe is at the time of writing inconsistent in the CVE names they fixed (CVE-2010-XXXX vs CVE-2011-XXXX), I've tried to guess the right ones, but we won't know for sure till the CVE databases are up to date.

This is an effort to try to structure the non-microsoft patches more or less in a familiar format on Black Tuesday, depending on the amount of available information available we can have more or less columns. Do let us know what you think of it!

Swa Frantzen -- Section 66

Microsoft August 2011 Black Tuesday Overview

Published: 2011-08-09,
Last Updated: 2011-08-09 19:35:25 UTC
by Swa Frantzen (Version: 1)
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Overview of the August 2011 Microsoft patches and their status.

# Affected Contra Indications - KB Known Exploits Microsoft rating(**) ISC rating(*)
clients servers
MS11-057 Multiple vulnerabilities in Internet Explorer allow random code execution with the rights of the logged on user and information leaks. Replaces MS11-050.

KB 2559049 A for-pay exploit for CVE-2011-1347 is available (the fix for this vulnerability is classified by Microsoft as a functionality upgrade)
Public disclosure against CVE-2011-1962 and CVE-2011-2383 are also reported.
Critical Important
MS11-058 Multiple vulnerabilities in the DNS server allow random code execution through NAPTR (Naming Authority Pointer) queries against recursive servers and denial of service.
Replaces MS09-008 and MS11-046.
DNS server

KB 2562485

No publicly known exploits

N/A Critical
MS11-059 Windows DAC (Data Access Components) can incorrectly restrict the path used for loading libraries, allowing random code execution (e.g. by opening a excel file on a network share).
Windows DAC, exposed through e.g. Excel

KB 2560656

No publicly known exploits

Important Less Urgent
MS11-060 Multiple vulnerabilities  in Visio allow random code execution with the rights of the logged on user.
Replaces MS11-008.

KB 2560978 No publicly known exploits Severity:Important
Critical Important
MS11-061 A cross site scripting (XSS) vulnerability in Remote Desktop Web Access.
Remote Desktop Web Access

KB 2546250 No publicly known exploits Severity:Important
Less Urgent Important
MS11-062 An input validation vulnerability in the way the NDISTAPI driver validates user mode input before sending it to the windows kernel allows privilege escalation.
Remote Access Service (RAS)

KB 2566454 No publicly known exploits Severity:Important
Important Less Urgent
MS11-063 An input validation vulnerability in the Client/Server Runtime SybSystem allows privilege escalation by running arbitrary code in the context of another process.
Replaces MS10-069 and MS11-056.

KB 2567680 No publicly known exploits Severity:Important
Important Less Urgent
MS11-064 Vulnerabilities in how windows kernels handle crafted ICMP messages and how Quality of Service (QoS) based on URLs on web hosts handles crafted URLs allow denial of service.
Replaces MS10-058.
TCP/IP stack

KB 2563894 No publicly known exploits Severity:Important
Important Important
MS11-065 A vulnerability in the RDP implementation allows denial of service of the exposed machine.
Remote Desktop Portocol (RDP)

KB 2570222 Microsoft reports it is used in targeted exploits. Severity:Important
Less urgent Important
MS11-066 An input validation in the Chart Control allows retrieval of any file within the ASP.NET application.
ASP.NET Chart Control

KB 2567943 No publicly known exploits Severity:Important
N/A Important
MS11-067 A cross site scripting (XSS) vulnerability in the Microsoft report viewer control.
Replaces MS09-062.
Report Viewer

KB 2578230 No publicly known exploits Severity:Important
Important Less Urgent
MS11-068 Access to meta-data of files (can be trough the web and file sharing) can cause a reboot of the windows kernel.
Replaces MS10-047.
Windows Kernel

KB 2556532 No publicly known exploits Severity:Moderate
Less Urgent Less Urgent
MS11-069 Lack of restricted access to the System.Net.Sockets namespace in the .NET framework allows information leaks and control over network traffic causing Denial of Service or portscanning.
Replaces MS11-039.
.NET framework

KB 2567951 No publicly known exploits Severity:Moderate
Important Important
We will update issues on this page for about a week or so as they evolve.
We appreciate updates
US based customers can call Microsoft for free patch related support on 1-866-PCSAFETY
(*): ISC rating
  • 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.

(**): The exploitability rating we show is the worst of them all due to the too large number of ratings Microsoft assigns to some of the patches.

Swa Frantzen -- Section 66

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