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Vulnerability Score 5.0 5.0
CVE Id CVE-2005-3400
Last Modified 05 Sep 2008 04:54:17
Published 01 Nov 2005 07:47:00
Confidentiality Impact NONE NONE
Integrity Impact PARTIAL PARTIAL
Availability Impact NONE NONE
Access Vector NETWORK
Access Complexity LOW
Authentication NONE



Multiple interpretation error in Fortinet allows remote attackers to bypass virus scanning via a file such as BAT, HTML, and EML with an "MZ" magic byte sequence which is normally associated with EXE, which causes the file to be treated as a safe type that could still be executed as a dangerous file type by applications on the end system, as demonstrated by a "triple headed" program that contains EXE, EML, and HTML content, aka the "magic byte bug."

Vulnerable Systems


BUGTRAQ - 20051026 Update for the magic byte bug

BUGTRAQ - 20051025 Multiple Vendor Anti-Virus Software Detection Evasion Vulnerability through

Last Updated: 27 May 2016 10:40:55