severity 557948 serious
thanks

Le jeudi 26 novembre 2009 04:30:23 Aníbal Monsalve Salazar, vous avez écrit :
> On Wed, Nov 25, 2009 at 02:07:41PM +0100, Sven wrote:
> >2.64-1 stopped working here while telneting to the mailhub still
> >works as does downgrading to 2.63-1.1.
> >
> >Error message is alway the following:
> >s...@marvin:~$ echo foo|mail -s bar s...@timegate.de
> >send-mail: Cannot open mailhub:25
> 
> Please read bug report #500454:
> 
> http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=500454
> 
> To fix your problem, add the username you're using to run ssmtp to the
> mail group list in /etc/groups. Something like:
> 
> grep mail /etc/group
> mail:x:8:sven

The mail group has read/write access to /var/mail/* and is intended for the 
mail daemons. For instance, Dovecot IMAP runs as the dovecot user ID, with 
mail group permission.

Adding all users to the mail group is not just impractical, it is a worse 
security vulnerability than #500454. All users would be able to read and 
modify other's mailboxes. That is not to deny that #500454 is a security 
problem. But putting users in the mail group is not at all a solution.

-- 
Rémi Denis-Courmont
http://www.remlab.net/
http://fi.linkedin.com/in/remidenis



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