GLSA 200804-05: NX: User-assisted execution of arbitrary code

http://security.gentoo.org/

Severity:	normal
Title:	NX: User-assisted execution of arbitrary code
Date:	04/06/2008
Bugs:	#210317
ID:	200804-05

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	Architecture(s)
net-misc/nxnode	< 3.1.0-r2	>= 3.1.0-r2	All supported architectures
net-misc/nx	< 3.1.0-r1	>= 3.1.0-r1	All 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

GLSA 200801-09

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@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.