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Internet Explorer HTML Elements Buffer Overflow Vulnerability
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Secunia Advisory:
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SA12959
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Release Date:
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2004-11-02
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Last Update:
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2004-12-01
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Critical:
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Extremely critical
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Impact:
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System access
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | Microsoft Internet Explorer 6.x
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| | CVE reference: | CVE-2004-1050 (Secunia mirror)
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Description:
A vulnerability has been reported in Internet Explorer, which can be exploited by malicious people to compromise a user's system.
The vulnerability is caused due to a boundary error within the handling of certain attributes in the <IFRAME> and <FRAME> HTML tags. This can be exploited to cause a buffer overflow via a malicious HTML document containing overly long strings in e.g. the "SRC" and "NAME" attributes of the <IFRAME> tag.
Successful exploitation allows execution of arbitrary code.
The vulnerability has been confirmed in the following versions:
* Internet Explorer 6.0 on Windows XP SP1 (fully patched).
* Internet Explorer 6.0 on Windows 2000 (fully patched).
NOTE: This advisory has been rated "Extremely critical" as a working exploit has been published on public mailing lists. A variant of the MyDoom virus is now also exploiting this vulnerability.
Do you have this product installed on your home computer? Scan using the free Personal Software Inspector. Check if a vulnerable version is installed on computers in your corporate network, using the Network Software Inspector.
Solution:
Apply patches.
Internet Explorer 6 SP1 on Microsoft Windows 2000 SP3/SP4, or on Microsoft Windows XP SP1:
http://www.microsoft.com/downloads/de...=3A9DBD51-4348-4EE6-9BC1-D9A1E12963EC
Internet Explorer 6 SP1 on Microsoft Windows NT Server 4.0 SP6a, on Microsoft Windows NT Server 4.0 Terminal Service Edition SP6, on Microsoft Windows 98, on Microsoft Windows 98 SE, or on Microsoft Windows Me:
http://www.microsoft.com/downloads/de...=96DE6C13-4F67-4581-8F51-2C8A90E11C57
Internet Explorer 6 for Windows XP SP1 (64-Bit Edition):
http://www.microsoft.com/downloads/de...=1e9105cf-eb5b-4af5-b73d-03e8969e0b5c
NOTE: The vulnerability does not affect systems running Windows XP with SP2 installed nor Windows Server 2003.
Provided and/or discovered by:
Discovered by:
ned
Additional research and exploit by:
Berend-Jan Wever
Changelog:
2004-11-04: Added link to US-CERT vulnerability note.
2004-11-09: Added information about virus exploiting this vulnerability. Added information about <FRAME> tag also being affected.
2004-11-18: Added CVE reference.
2004-12-01: Vendor issues patches.
Original Advisory:
MS04-040 (KB889293):
http://www.microsoft.com/technet/security/bulletin/ms04-040.mspx
Other References:
US-CERT VU#842160:
http://www.kb.cert.org/vuls/id/842160
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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