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Internet Explorer 7 navcancl.htm Cross-Site Scripting Vulnerability
Secunia Advisory: SA24535
Release Date: 2007-03-15
Last Update: 2007-06-14
Popularity: 47,069 views

Critical:
Less critical
Impact: Cross Site Scripting
Spoofing
Where: From remote
Solution Status: Vendor Patch

Software:Microsoft Internet Explorer 7.x

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CVE reference:CVE-2007-1499


Description:
Aviv Raff has discovered a vulnerability in Internet Explorer 7, which can be exploited by malicious people to conduct phishing attacks.

An input validation error exists in the local resource page "navcancl.htm" when generating the "Refresh the page" link. This can be exploited to inject arbitrary script code to e.g. spoof the contents of an arbitrary site when the user clicks on the "Refresh the page" link.

Secunia has constructed a test, which can be used to check if your browser is affected by this issue:
http://secunia.com/Internet_Explorer_7_navcancl.htm_Cross-Site_Scripting_Vulnerability/

The vulnerability is confirmed in Internet Explorer 7 on a fully patched Windows XP SP2 system. Other versions may also be affected.

Solution:
Apply patches.

Internet Explorer 7 for Windows XP SP2:
http://www.microsoft.com/downloads/de...=C2191703-8CBD-4959-9F84-E13F21173926

Internet Explorer 7 for Windows XP Professional x64 Edition (optionally with SP2):
http://www.microsoft.com/downloads/de...=69C526B8-8B07-42BC-9BED-E18DEAE21C8E

Internet Explorer 7 for Windows Server 2003 SP1/SP2:
http://www.microsoft.com/downloads/de...=A074D9C0-1FED-4753-845E-073CFCE99F45

Internet Explorer 7 for Windows Server 2003 x64 Edition (optionally with SP2):
http://www.microsoft.com/downloads/de...=744ACB43-64DA-48CC-AE69-9386B597EABC

Internet Explorer 7 for Windows Server 2003 for Itanium-based systems SP1/SP2:
http://www.microsoft.com/downloads/de...=069C1560-B5E5-4DFE-A18D-E0507D406028

Internet Explorer 7 for Windows Vista:
http://www.microsoft.com/downloads/de...=77287386-48EB-4AA9-9537-626A3093AAF7

Internet Explorer 7 for Windows Vista x64 Edition:
http://www.microsoft.com/downloads/de...=77287386-48EB-4AA9-9537-626A3093AAF7

Provided and/or discovered by:
Aviv Raff

Changelog:
2007-03-21: Added CVE reference.
2007-06-14: Updated "Solution" section.

Original Advisory:
MS07-033 (KB933566):
http://www.microsoft.com/technet/security/Bulletin/MS07-033.mspx

Aviv Raff:
http://aviv.raffon.net/2007/03/14/Phi...ingIE7LocalResourceVulnerability.aspx


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