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

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

Affected packages

Package 	net-misc/nxnode on all architectures
Affected versions 	< 3.1.0-r2
Unaffected versions 	>= 3.1.0-r2
Package 	net-misc/nx on all architectures
Affected versions 	< 3.1.0-r1
Unaffected versions 	>= 3.1.0-r1

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.

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