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TITLE:
Network Audio System Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA24527

VERIFY ADVISORY:
http://secunia.com/advisories/24527/

CRITICAL:
Less critical

IMPACT:
Privilege escalation, DoS

WHERE:
>From local network

SOFTWARE:
Network Audio System 1.x
http://secunia.com/product/13684/

DESCRIPTION:
Luigi Auriemma has reported some vulnerabilities in Network Audio
System, which potentially can be exploited by malicious, local users
to gain escalated privileges or by malicious people to cause a DoS
(Denial of Service).

1) A boundary error within "accept_att_local()" in
server/os/connection.c can be exploited to cause a stack-based buffer
overflow via an overly long (greater than 64 bytes) slave name in a
USL connection.

Successful exploitation may allow malicious, local users to gain root
privileges.

2) An input validation error within "AddResource()" in
server/dia/resource.c can be exploited to cause the service to crash
via a specially crafted packet with an invalid client ID.

3) An integer-overflow error within "ProcAuWriteElement()" in
server/dia/audispatch.c can be exploited to cause the service to
crash via a specially crafted packet with an overly large max_samples
value.

4) A boundary error within "ProcAuSetElements()" in
server/dia/audispatch.c can be exploited to cause the service to
crash via a specially crafted packet with an overly large num_actions
or numElements value.

5) An input validation error within "compileInputs()" in
server/dia/auutil.c can be exploited to cause the service to crash
via a specially crafted packet with an invalid element number.

6) A NULL-pointer dereference error within when processing
simultaneous connections can be exploited to cause the service to
crash.

The vulnerabilities are reported in version 1.8a. Other versions may
also be affected.

SOLUTION:
Fixed in the SVN repository.

PROVIDED AND/OR DISCOVERED BY:
Luigi Auriemma

ORIGINAL ADVISORY:
http://aluigi.altervista.org/adv/nasbugs-adv.txt

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