[gentoo-announce] [ GLSA 200804-05 ] NX: User-assisted execution of arbitrary code

[news 28]

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Gentoo Linux Security Advisory GLSA 200804-05:02

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http://security.gentoo.org/

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Severity: Normal

Title: NX: User-assisted execution of arbitrary code

Date: April 06, 2008

Updated: April 06, 2008

Bugs: #210317

ID: 200804-05:02

 

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Synopsis

========

 

NX uses code from the X.org X11 server which is prone to multiple

vulnerabilities.

 

Background

==========

 

NoMachine's NX establishes remote connections to X11 desktops over

small bandwidth links. NX and NX Node are the compression core

libraries, whereas NX is used by FreeNX and NX Node by the binary-only

NX servers.

 

Affected packages

=================

 

-------------------------------------------------------------------

Package / Vulnerable / Unaffected

-------------------------------------------------------------------

1 net-misc/nxnode < 3.1.0-r2 >= 3.1.0-r2

2 net-misc/nx < 3.1.0-r1 >= 3.1.0-r1

-------------------------------------------------------------------

2 affected packages on all of their supported architectures.

-------------------------------------------------------------------

 

Description

===========

 

Multiple integer overflow and buffer overflow vulnerabilities have been

discovered in the X.Org X server as shipped by NX and NX Node

(vulnerabilities 1-4 in GLSA 200801-09).

 

Impact

======

 

A remote attacker could exploit these vulnerabilities via unspecified

vectors, leading to the execution of arbitrary code with the privileges

of the user on the machine running the NX server.

 

Workaround

==========

 

There is no known workaround at this time.

 

Resolution

==========

 

All NX Node users should upgrade to the latest version:

 

# emerge --sync

# emerge --ask --oneshot --verbose ">=net-misc/nxnode-3.1.0-r2"

 

All NX users should upgrade to the latest version:

 

# emerge --sync

# emerge --ask --oneshot --verbose ">=net-misc/nx-3.1.0-r1"

 

References

==========

 

[ 1 ] GLSA 200801-09

http://www.gentoo.org/security/en/glsa/glsa-200801-09.xml

 

Availability

============

 

This GLSA and any updates to it are available for viewing at

the Gentoo Security Website:

 

http://security.gentoo.org/glsa/glsa-200804-05.xml

 

Concerns?

=========

 

Security is a primary focus of Gentoo Linux and ensuring the

confidentiality and security of our users machines is of utmost

importance to us. Any security concerns should be addressed to

security ( -at -) gentoo.org or alternatively, you may file a bug at

http://bugs.gentoo.org.

 

License

=======

 

Copyright 2008 Gentoo Foundation, Inc; referenced text

belongs to its owner(s).

 

The contents of this document are licensed under the

Creative Commons - Attribution / Share Alike license.

 

http://creativecommons.org/licenses/by-sa/2.5