Magic Byte Bug: Exploiting Multiple Interpretation Error in F-Prot 3.16c

CVE-2005-3374 · MEDIUM Severity

AV:N/AC:H/AU:N/C:P/I:P/A:P

Multiple interpretation error in F-Prot 3.16c 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."

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