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Microsoft Windows URI Handling Command Execution Vulnerability
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Secunia Advisory:
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SA26201
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Release Date:
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2007-07-26
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Last Update:
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2007-11-13
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Popularity:
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64,419 views
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Critical:
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Highly 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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| OS: | Microsoft Windows Server 2003 Datacenter Edition
Microsoft Windows Server 2003 Enterprise Edition
Microsoft Windows Server 2003 Standard Edition
Microsoft Windows Server 2003 Web Edition
Microsoft Windows XP Home Edition
Microsoft Windows XP Professional
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Secunia CVSS-2 Score:
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Available in Secunia business solutions 
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| Advisory Content (Page 1 of 3) | [ 1 ] [ 2 ] [ 3 ] | |
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Description:
A vulnerability has been discovered in Microsoft Windows, which can be exploited by malicious people to compromise a vulnerable system.
The vulnerability is caused due to an input validation error within the Windows shell (shell32.dll) when handling specially crafted URIs with registered URI handlers (e.g. "mailto", "news", "nntp", "snews", "telnet", and "http"). This can be exploited to execute arbitrary commands when a user of certain applications (e.g. Firefox) visits a malicious website or clicks on a link with a specially crafted URI containing a "%" character and ending with a certain extension (e.g. ".bat" or ".cmd").
Examples:
mailto:test%../../../../windows/system32/calc.exe".cmd
nntp:../../../../../Windows/system32/telnet.exe" "secunia.com 80%.bat
Successful exploitation using currently known vectors requires that Internet Explorer 7 is installed on the system, though the core problem exists on Windows system with other versions of Internet Explorer as well.
The following applications have been identified as attack vectors on a fully patched Windows XP SP2 and Windows Server 2003 SP2 system:
* Firefox version 2.0.0.5
* Netscape Navigator version 9.0b2
* mIRC version 6.3
* Adobe Reader/Acrobat version 8.1 and prior (when opening PDF files)
* Outlook Express 6 (e.g. when following specially crafted links in VCards)
* Outlook 2000 (e.g. when following specially crafted links in VCards)
Other versions and applications may also be affected.
Change Page:
[ 1 ] [ 2 ] [ 3 ]
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About this Secunia Advisory
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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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