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April 2008 - Black Tuesday Overview

Published: 2008-04-08
Last Updated: 2008-04-16 01:23:53 UTC
by Swa Frantzen (Version: 5)
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Overview of the April 2008 Microsoft patches and their status.

# Affected Contra Indications Known Exploits Microsoft rating ISC rating(*)
clients servers
MS08-018 Input validation vulnerability allows code execution when opening a malicious file.
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.
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.
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.

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.

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.
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.
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.
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

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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:

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
Source:the Symantec report mentioned above, page 23.

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

--
Swa Frantzen -- Gorilla Security

 

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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:

  • Text mail (MIME)
  • HTML speed reader (.htm)
  • Applix Presents (.ag)
  • Folio Flat File (.fff)
  • KeyView document viewing engine

Workarounds and on demand patches are available. Secunia (who reported the vulnerability to IBM) has an advisory on the same subject as well.

--
Swa Frantzen -- Gorilla Security

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