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Vulnerability Score 5.0 5.0
CVE Id CVE-2005-3399
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 CAT-QuickHeal 8.0 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


  • Cat Quick Heal 8.0


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