Home page logo
/

bugtraq logo Bugtraq mailing list archives

Re: Anti Virus Mailscanners DOS
From: Jedi/Sector One <j () pureftpd org>
Date: Tue, 26 Feb 2002 07:25:25 +0100

On Mon, Feb 25, 2002 at 04:29:02PM -0300, Eduardo R. Maciel wrote:
An antivirus mailscanner should check the filesizes inside a compressed file like .tar.gz, .zip, .bz2, etc, BEFORE 
open the file for scanning.
Sending several mails with these compressed files may let a machine out of memory or disk space. 
      The mailscanner should check the filesizes inside a compressed file.

  A better approach is just to set proper process limits before spawning the
antivirus checker.

  You can achieve this with softlimits (from daemontools), or with a simple
script using standard shell facilities (limit/ulimit) .

  It doesn't require any change to your antivirus software.

-- 
 __  /*-      Frank DENIS (Jedi/Sector One) <j () 42-Networks Com>     -*\  __
 \ '/    <a href="http://www.PureFTPd.Org/";> Secure FTP Server </a>    \' /
  \/  <a href="http://www.Jedi.Claranet.Fr/";> Misc. free software </a>  \/


  By Date           By Thread  

Current thread:
[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]