Microsoft Internet Explorer file URL encode

ie-file-url-encode (19214)

Medium Risk

Description:

Microsoft Internet Explorer running on Windows 2000, Windows XP, Windows Server 2003, Windows 98, and Windows ME could allow a remote attacker to execute arbitrary code on the system, caused by a vulnerability in the way Internet Explorer parses and validates certain types of encoded URLs. A remote attacker could create a specially-crafted encoded URL, which would cause a page that would normally be run in the Internet Zone to be run in the less restrictive Intranet Zone or My Computer zone, once the link is clicked. An attacker could exploit this vulnerability to execute arbitrary code on the system with rights of the victim by creating a malicious Web page and hosting it on a Web site or by sending it to a victim as an HTML email.

Platforms Affected:

• Microsoft, Windows 2000 SP4
• Microsoft, Windows 2000 SP3
• Microsoft, Windows 2003 Server
• Microsoft, Windows 2003 Server Itanium
• Microsoft, Windows 98
• Microsoft, Windows 98SE
• Microsoft, Windows Me
• Microsoft, Windows XP 2003 SP1 64-bit
• Microsoft, Windows XP 2003 64-bit Itanium
• Microsoft, Windows XP SP1
• Microsoft, Windows XP SP2

Remedy:

Apply the appropriate patch for your system, as listed in the latest Microsoft Security Bulletin. See References.

— OR —

Use Microsoft Automatic Update if it is supported by your operating system. The original bulletin issued by Microsoft has been superseded.

Consequences:

Gain Access

References:

• CIAC Information Bulletin P-125, Microsoft Cumulative Security Update for Internet Explorer at http://www.ciac.org/ciac/bulletins/p-125.shtml.
• Microsoft Security Bulletin MS05-014, Cumulative Security Update for Internet Explorer (867282) at http://www.microsoft.com/technet/security/Bulletin/MS05-014.mspx.
• Microsoft Security Bulletin MS05-020, Cumulative Security Update for Internet Explorer (890923) at http://www.microsoft.com/technet/security/Bulletin/MS05-020.mspx.
• Microsoft Security Bulletin MS05-025, Cumulative Security Update for Internet Explorer (883939) at http://www.microsoft.com/technet/security/bulletin/ms05-025.mspx.
• Microsoft Security Bulletin MS05-038, Cumulative Security Update for Internet Explorer (896727) at http://www.microsoft.com/technet/security/bulletin/ms05-038.mspx.
• Microsoft Security Bulletin MS05-052, Cumulative Security Update for Internet Explorer (896688) at http://www.microsoft.com/technet/security/Bulletin/MS05-052.mspx.
• Microsoft Security Bulletin MS05-054, Cumulative Security Update for Internet Explorer (905915) at http://www.microsoft.com/technet/security/Bulletin/MS05-054.mspx.
• Microsoft Security Bulletin MS06-004, Cumulative Security Update for Internet Explorer (910620) at http://www.microsoft.com/technet/security/Bulletin/MS06-004.mspx.
• Microsoft Security Bulletin MS06-013, Cumulative Security Update for Internet Explorer (912812) at http://www.microsoft.com/technet/security/Bulletin/MS06-013.mspx.
• Microsoft Security Bulletin MS06-021, Cumulative Security Update for Internet Explorer (916281) at http://www.microsoft.com/technet/security/Bulletin/MS06-021.mspx.
• Microsoft Security Bulletin MS06-042, Cumulative Security Update for Internet Explorer (918899) at http://www.microsoft.com/technet/security/bulletin/ms06-042.mspx.
• Microsoft Security Bulletin MS06-067, Cumulative Security Update for Internet Explorer (922760) at http://www.microsoft.com/technet/security/bulletin/ms06-067.mspx.
• Microsoft Security Bulletin MS06-072, Cumulative Security Update for Internet Explorer (925454) at http://www.microsoft.com/technet/security/Bulletin/MS06-072.mspx.
• Microsoft Security Bulletin MS07-016, Cumulative Security Update for Internet Explorer (928090) at http://www.microsoft.com/technet/security/Bulletin/ms07-016.mspx.
• Microsoft Security Bulletin MS07-027, Cumulative Security Update for Internet Explorer (931768) at http://www.microsoft.com/technet/security/bulletin/ms07-027.mspx.
• Microsoft Security Bulletin MS07-033, Cumulative Security Update for Internet Explorer (933566) at http://www.microsoft.com/technet/security/bulletin/ms07-033.mspx.
• Microsoft Security Bulletin MS07-045, Cumulative Security Update for Internet Explorer (937143) at http://www.microsoft.com/technet/security/bulletin/ms07-045.mspx.
• Microsoft Security Bulletin MS07-057, Cumulative Security Update for Internet Explorer (939653) at http://www.microsoft.com/technet/security/Bulletin/MS07-057.mspx.
• Microsoft Security Bulletin MS07-069, Cumulative Security Update for Internet Explorer (942615) at http://www.microsoft.com/technet/security/bulletin/ms07-069.mspx.
• Microsoft Security Bulletin MS08-010, Cumulative Security Update for Internet Explorer (944533) at http://www.microsoft.com/technet/security/bulletin/ms08-010.mspx.
• Microsoft Security Bulletin MS08-024, Cumulative Security Update for Internet Explorer (947864) at http://www.microsoft.com/technet/security/bulletin/ms08-024.mspx.
• Microsoft Security Bulletin MS08-031, Cumulative Security Update for Internet Explorer (950759) at http://www.microsoft.com/technet/security/Bulletin/MS08-031.mspx.
• Microsoft Security Bulletin MS08-045, Cumulative Security Update for Internet Explorer (953838) at http://www.microsoft.com/technet/security/bulletin/ms08-045.mspx.
• Microsoft Security Bulletin MS08-058, Cumulative Security Update for Internet Explorer (956390) at http://www.microsoft.com/technet/security/bulletin/ms08-058.mspx.
• BID-12473: Microsoft Internet Explorer URI Decoding Vulnerability
• CVE-2005-0054: Internet Explorer 5.01, 5.5, and 6 allows remote attackers to spoof a less restrictive security zone and execute arbitrary code via an HTML page containing URLs that contain hostnames that have been double hex encoded, which are decoded twice to generate a malicious hostname, aka the URL Decoding Zone Spoofing Vulnerability.
• US-CERT VU#580299: Microsoft Internet Explorer contains URL decoding cross-domain vulnerability

Reported:

Feb 08, 2005

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