NX Server Free Edition, NX Node: Privilege escalation

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 201201-07 / NX Server NX Node
Release Date	January 23, 2012
Latest Revision	January 23, 2012: 1
Impact	high
Exploitable	local

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-misc/nxserver-freeedition	< 3.5.0.5	>= 3.5.0.5	All supported architectures
net-misc/nxnode	< 3.5.0.4	>= 3.5.0.4	All supported architectures

Related bugreports: #378345

Synopsis

An unspecified vulnerability in NX Server Free Edition and NX Node could allow local attackers to gain root privileges.

2. Impact Information

Background

NX Server Free Edition is a remote display technology by No Machine. NX Node provides the shared components for NX Server.

Description

NX Server Free Edition and NX Node use nxconfigure.sh, a setuid script containing an unspecified vulnerability.

Impact

A local attacker could gain escalated privileges.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All NX Server Free Edition users should upgrade to the latest version:

Code Listing 3.1: Resolution

  # emerge --sync
  # emerge --ask --oneshot --verbose
  ">=net-misc/nxserver-freeedition-3.5.0.5"

All NX Node users should upgrade to the latest version:

Code Listing 3.2: Resolution

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-misc/nxnode-3.5.0.4"

NOTE: This is a legacy GLSA. Updates for all affected architectures are available since August 23, 2011. It is likely that your system is already no longer affected by this issue.

4. References

CVE-2011-3977

Page updated January 23, 2012

Summary: This is a Gentoo Linux Security Advisory

Security Team
Contact Address

Donate to support our development efforts.