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[ GLSA 200704-20 ] NAS: Multiple vulnerabilities
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PostPosted: Mon Apr 23, 2007 10:26 pm    Post subject: [ GLSA 200704-20 ] NAS: Multiple vulnerabilities Reply with quote

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:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/nas-1.8b"


References

CVE-2007-1543
CVE-2007-1544
CVE-2007-1545
CVE-2007-1546
CVE-2007-1547
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