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https://bro-tracker.atlassian.net/browse/BIT-1238?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Seth Hall updated BIT-1238:
---------------------------
We’ve been meaning to write a test suite for our file signature matching
because right now it’s hard to trust that we’re doing things correctly as we
continue moving forward, but I never got around to it when I was making this
set of changes unfortunately.
> High false-positive for application/x-tar signature
> ---------------------------------------------------
>
> Key: BIT-1238
> URL: https://bro-tracker.atlassian.net/browse/BIT-1238
> Project: Bro Issue Tracker
> Issue Type: Problem
> Components: Bro
> Affects Versions: 2.3
> Reporter: Brian O'Berry
> Assignee: Seth Hall
> Labels: file, mime, signature
> Fix For: git/master, 2.4
>
> Attachments: test.tar.gz
>
>
> The following signature in base/frameworks/files/magic/general.sig frequently
> triggers on text files in our environment, and includes a strength value
> higher than GNU and POSIX tar signatures in libmagic.sig.
> {code}
> signature file-tar {
> file-magic /([[:print:]\x00]){100}(([[:digit:]\x00\x20]){8}){3}/
> file-mime "application/x-tar", 150
> }
> {code}
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