April 2008 - Black Tuesday Overview

Published: 2008-04-08. Last Updated: 2008-04-16 01:23:53 UTC
by Swa Frantzen (Version: 5)

Overview of the April 2008 Microsoft patches and their status.

#	Affected	Contra Indications	Known Exploits	Microsoft rating	ISC rating(*)
#	Affected	Contra Indications	Known Exploits	Microsoft rating	clients	servers
MS08-018	Input validation vulnerability allows code execution when opening a malicious file.
MS08-018	Project CVE-2008-1088	KB 950183	No publicly known exploits	Critical	Critical	Important
MS08-019	Multiple input validation vulnerabilities allow code execution. Replaces MS07-030.
MS08-019	Visio CVE-2008-1089 CVE-2008-1090	KB 949032	No publicly known exploits	Important	Critical	Important
MS08-020	Windows' DNS client vulnerable to spoofing due to lack of entropy in a random number generator.
MS08-020	DNS client CVE-2008-0087	KB 945553	Update well published problem	Important	Critical	Critical
MS08-021	Heap overflows in opening EMF and WMF images and file name based stack overflow in opening EMF files allow code execution. Replaces MS07-046.
MS08-021	GDI CVE-2008-1083 CVE-2008-1087	KB 948590	PoC available in for pay program Update April 10th: Symantec have reported non-working exploits in the wild. Update April 11th: Arbor networks is reporting exploits in the wild	Critical	Update PATCH NOW	Important
MS08-022	Javascript and visual basic script engines allow code execution. Replaces MS06-023.
MS08-022	Scripting engines CVE-2008-0083	KB 944338	Update PoC available in for pay program	Critical	Critical	Important
MS08-023	Memory corruption vulnerability in hxvz.dll and 3rd party killbit for a Yahoo! Music Jukebox activeX control that could allow code execution.
MS08-023	ActiveX CVE-2008-1086	KB 948881	PoC exploits were posted on the internet	Critical	Critical	Important
MS08-024	Cumulative Internet Explorer patch. Adds protection for a memory corruption vulnerability leading to code execution when visiting a compromised or malicious web site. Replaces MS08-010.
MS08-024	MSIE CVE-2008-1085	KB 947864	No publicly known exploits	Critical	Critical	Important
MS08-025	Input validation vulnerability in the windows kernel allows privilege escalation.
MS08-025	Windows kernel CVE-2008-1084	KB 941693	Proof of concept available in a for pay program	Important	Critical	Critical

We will update issues on this page 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.

--
Swa Frantzen -- Gorilla Security

Keywords: Microsoft mspatchday Patch Tuesday patches

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Symantec's Global Internet Security Threat Report

Published: 2008-04-08. Last Updated: 2008-04-08 20:51:16 UTC
by Swa Frantzen (Version: 1)

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One of our readers wrote in that Symantec has released its Global Internet Security Threat Report Volume XIII. They also have a shorter executive summary.

I found the overview of the underground market interesting as it's something I like to use in awareness sessions:

Source:the Symantec report mentioned above, page 23.
Goods and services	Percentage	Range of prices
Bank accounts	22%	$10-$1000
Credit cards	13%	$0.40-$20
Full identities	9%	$1-$15
eBay accounts	7%	$1-$8
Scams	7%	$2.5/week - $50/week for hosting. $25 for design
Mailers	6%	$1-$10
Email addresses	5%	$0.83/MB-$10/MB
Email passwords	5%	$4-$30
Drop (request or offer)	5%	10%-50% of total drop amount
Proxies	5%	$1.50-$30

If you have found uncommon gems in the 105 page long report, feel free to point them out to us.

--
Swa Frantzen -- Gorilla Security

Keywords: report underground market

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Notes file viewer vulnerabilities

Published: 2008-04-08. Last Updated: 2008-04-08 20:49:33 UTC
by Swa Frantzen (Version: 1)

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IBM released a technote titled: "Potential security vulnerabilities in Lotus Notes file viewers for Applix Presents, Folio Flat File, HTML speed reader, KeyView and MIME".

The vulnerabilites center around attached files of many types: