CVE-2005-3371

high

Description

Multiple interpretation error in AVG 7 7.0.323 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."

References

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

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

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

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

http://marc.info/?l=bugtraq&m=113026417802703&w=2

Details

Source: Mitre, NVD

Published: 2005-10-30

Updated: 2026-06-16

Risk Information

CVSS v2

Base Score: 5.1

Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 8.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

Severity: High

EPSS

EPSS: 0.00447