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Date: Mon, 2 May 2011 15:29:29 -0400
From: Josh Bressers <>
Cc: "Steven M. Christey" <>,,
        Tomasz Papszun <>,
        Yaroslav Halchenko <>
Subject: Re: CVE Request -- fail2ban -- Use of insecure
 default temporary file when unbanning an IP (tmpfile =

On Fri, Apr 29, 2011 at 01:02:04PM +0200, Jan Lieskovsky wrote:
> Hello Josh, Steve, vendors,
>   It was found that fail2ban IPs banner used insecure default temporary file
> when unbanning an IP address. A local attacker could use this flaw to conduct
> symlink attacks in order to gain access to sensitive information or potentially
> to overwrite arbitrary file on the system.
> References:
> [1]
> [2]
> Patch applied by Debian distribution:
> [3];a=commitdiff;h=ea7d352616b1e2232fcaa99b11807a86ce29ed8b
> Could you allocate a CVE id for this? (Note: It should CVE-2009-* identifier)

Please use CVE-2009-5023



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