National Cyber-Alert System

Vulnerability Summary for CVE-2005-3381

Overview

Multiple interpretation error in Ukrainian National Antivirus (UNA) 1.83.2.16 with kernel 265 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."

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

References to Advisories, Solutions, and Tools

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External Source: BID

Name: 15189

Hyperlink:http://www.securityfocus.com/bid/15189

External Source: MISC

Name: http://www.securityelf.org/updmagic.html

Hyperlink:http://www.securityelf.org/updmagic.html

External Source: MISC

Name: http://www.securityelf.org/magicbyteadv.html

Type: Advisory

Hyperlink:http://www.securityelf.org/magicbyteadv.html

External Source: MISC

Name: http://www.securityelf.org/magicbyte.html

Hyperlink:http://www.securityelf.org/magicbyte.html

External Source: BUGTRAQ

Name: 20051025 Multiple Vendor Anti-Virus Software Detection Evasion Vulnerability through

Type: Advisory

Hyperlink:http://marc.theaimsgroup.com/?l=bugtraq&m=113026417802703&w=2