[ GLSA 200704-20 ] NAS: Multiple vulnerabilities

[GLSA]

Gentoo Linux Security Advisory

Title: NAS: Multiple vulnerabilities (GLSA 200704-20)
Severity: high
Exploitable: remote
Date: April 23, 2007
Bug(s): #171428
ID: 200704-20

Synopsis


The Network Audio System is vulnerable to a buffer overflow that could
result in the execution of arbitrary code with root privileges.


Background


NAS is a network transparent, client/server audio transport system.


Affected Packages

Package: media-libs/nas
Vulnerable: < 1.8b
Unaffected: >= 1.8b
Architectures: All supported architectures


Description


Luigi Auriemma has discovered multiple vulnerabilities in NAS, some of
which include a buffer overflow in the function accept_att_local(), an
integer overflow in the function ProcAuWriteElement(), and a null
pointer error in the function ReadRequestFromClient().


Impact


An attacker having access to the NAS daemon could send an overly long
slave name to the server, leading to the execution of arbitrary code
with root privileges. A remote attacker could also send a specially
crafted packet containing an invalid client ID, which would crash the
server and result in a Denial of Service.


Workaround


There is no known workaround at this time.


Resolution


All NAS users should upgrade to the latest version: