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Date: Thu, 21 Feb 2013 23:51:16 +0100
From: Anders Petersson <anders@....se>
To: oss-security@...ts.openwall.com
Cc: Henri Salo <henri@...v.fi>, Agostino Sarubbo <ago@...too.org>, security-alert@...nx.org
Subject: Re: CVE request: nginx world-readable logdir
2013/2/21 Anders Petersson <anders@....se>
> However on Debian Squeeze the logs themselves are not world-readable (at
> least on my system):
>
> $ ls -la /var/log/nginx/
> total 452
> drwxr-xr-x 2 root root 4096 Feb 21 06:25 .
> drwxr-xr-x 9 root root 4096 Feb 21 06:25 ..
> -rw-r----- 1 www-data adm 934 Feb 21 18:40 access.log
> -rw-r----- 1 www-data adm 20134 Feb 21 03:46 access.log.1
>
Apologies for the noise, Henri is absolutely correct. nginx on Debian
Squeeze is affected. My observation is merely an artifact of the
logrotation which fixes the permissions in a cron-job (hence if you have
the logrotate package installed on Debian Squeeze the logs will have
correct permissions as soon as the logs have been rotated once, but left to
it's own devices nginx will create the log file world-readable, also the
nginx package does not depend on the logrotate package so it may not be
installed).
# rm /var/log/nginx/access.log
# service nginx restart
$ ls -l /var/log/nginx/
total 1088
-rw-r--r-- 1 root root 0 Feb 21 23:31 access.log
--
Anders Petersson
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