Extremely critical

Internet Explorer Multiple Vulnerabilities

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Release Date:  2010-12-14    Last Update:  2011-03-01    Views:  25,249

Secunia Advisory SA42510

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Impact:

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Solution Status:

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Software:

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Description


Multiple vulnerabilities have been reported in Internet Explorer, which can be exploited by malicious people to compromise a user's system


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Subject: Internet Explorer Multiple Vulnerabilities

User Message
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koppensb

RE: Internet Explorer CSS Import Rule Processing Memory Corruption Vulnerability
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koppensb RE: Internet Explorer CSS Import Rule Processing Memory Corruption Vulnerability
Member 14th Dec, 2010 15:13
Score: 9
Posts: 4
User Since: 29th Sep 2010
System Score: N/A
Location: AT
Last edited on 14th Dec, 2010 15:13
Does confirmed with Internet Explorer 8 mean that it is also exploitable with Protected Mode activated?
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htmtrade

RE: Internet Explorer CSS Import Rule Processing Memory Corruption Vulnerability
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ddmarshall RE: Internet Explorer CSS Import Rule Processing Use-After-Free Vulnerability
Dedicated Contributor 23rd Dec, 2010 16:14
Score: 1232
Posts: 979
User Since: 8th Nov 2008
System Score: 98%
Location: UK
Last edited on 23rd Dec, 2010 16:14
The Microsoft Security Advisory states that exploitation is possible with Protected Mode on, but the attacker would have very limited rights.
http://www.microsoft.com/technet/security/advisory...

For Vista and later systems, the Enhanced Mitigation Experience Toolkit can be used to prevent the published exploit working by forcing ASLR for Internet Explorer. Some of the other mitigations may be effective for XP.
http://blogs.technet.com/b/srd/archive/2010/12/22/...



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crimsoncarnage

RE: Internet Explorer CSS Import Rule Processing Use-After-Free Vulnerability
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crimsoncarnage

RE: Internet Explorer CSS Import Rule Processing Use-After-Free Vulnerability
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ddmarshall

RE: Internet Explorer CSS Import Rule Processing Memory Corruption Vulnerability
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This reply has been minimised due to a negative Relevancy Score.

mbphvice

RE: Internet Explorer CSS Import Rule Processing Use-After-Free Vulnerability
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ddmarshall RE: Internet Explorer CSS Import Rule Processing Memory Corruption Vulnerability
Dedicated Contributor 20th Jan, 2011 14:05
Score: 1232
Posts: 979
User Since: 8th Nov 2008
System Score: 98%
Location: UK
If you read the Microsoft advisory, you will find that Internet Explorer 6 is also affected. You cannot use it with Windows 7 and anyone who could use it would be ill advised to use it as it has less inbuilt security than anything later.

There are two easily applied workarounds available to you in the Microsoft advisory. Either install EMET and use it to protect Internet Explorer or run the Fixit in http://support.microsoft.com/kb/2488013 .

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