and actually since .* is greedy, vulnerability is not there actually...
could you test on example?
On Wed, 12 Dec 2007, Chris Fryer wrote:
> This is the relevant line from /etc/fail2ban.conf when fail2ban 0.6.0-3
> is installed on Ubuntu 6.06 LTS (Dapper).
> failregex = : (?:(?:Authentication failure|Failed [-/\w+]+) for(?:
> [iI](?:llegal|nvalid) user)?|[Ii](?:llegal|nvalid) user) .* from
> (?:::f{4,6}:)?(?P<host>\S*)
> This seems to allow any non-whitespace characters after <host>, which I
> believe is the nature of the vulnerability described in CVE-2006-6302.
> Please correct me if I'm wrong.
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Yaroslav Halchenko
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Denial of service through log injection in fail2ban
https://bugs.launchpad.net/bugs/121374
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