Jump to content
Compatible Support Forums
Sign in to follow this  
news

[RHSA-2014:2024-01] Important: ntp security update

Recommended Posts

-----BEGIN PGP SIGNED MESSAGE-----

Hash: SHA1

 

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

Red Hat Security Advisory

 

Synopsis: Important: ntp security update

Advisory ID: RHSA-2014:2024-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2014-2024.html

Issue date: 2014-12-20

CVE Names: CVE-2014-9293 CVE-2014-9294 CVE-2014-9295

CVE-2014-9296

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

 

1. Summary:

 

Updated ntp packages that fix several security issues are now available

for Red Hat Enterprise Linux 6 and 7.

 

Red Hat Product Security has rated this update as having Important security

impact. A Common Vulnerability Scoring System (CVSS) base score, which

gives a detailed severity rating, is available from the CVE link in the

References section.

 

2. Relevant releases/architectures:

 

Red Hat Enterprise Linux Client (v. 7) - x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64

Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, noarch, x86_64

Red Hat Enterprise Linux HPC Node (v. 6) - x86_64

Red Hat Enterprise Linux HPC Node Optional (v. 6) - noarch, x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server (v. 7) - ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 6) - i386, noarch, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - noarch, ppc64, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, noarch, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - noarch, x86_64

 

3. Description:

 

The Network Time Protocol (NTP) is used to synchronize a computer's time

with a referenced time source.

 

Multiple buffer overflow flaws were discovered in ntpd's crypto_recv(),

ctl_putdata(), and configure() functions. A remote attacker could use

either of these flaws to send a specially crafted request packet that could

crash ntpd or, potentially, execute arbitrary code with the privileges of

the ntp user. Note: the crypto_recv() flaw requires non-default

configurations to be active, while the ctl_putdata() flaw, by default, can

only be exploited via local attackers, and the configure() flaw requires

additional authentication to exploit. (CVE-2014-9295)

 

It was found that ntpd automatically generated weak keys for its internal

use if no ntpdc request authentication key was specified in the ntp.conf

configuration file. A remote attacker able to match the configured IP

restrictions could guess the generated key, and possibly use it to send

ntpdc query or configuration requests. (CVE-2014-9293)

 

It was found that ntp-keygen used a weak method for generating MD5 keys.

This could possibly allow an attacker to guess generated MD5 keys that

could then be used to spoof an NTP client or server. Note: it is

recommended to regenerate any MD5 keys that had explicitly been generated

with ntp-keygen; the default installation does not contain such keys).

(CVE-2014-9294)

 

A missing return statement in the receive() function could potentially

allow a remote attacker to bypass NTP's authentication mechanism.

(CVE-2014-9296)

 

All ntp users are advised to upgrade to this updated package, which

contains backported patches to resolve these issues. After installing the

update, the ntpd daemon will restart automatically.

 

4. Solution:

 

Before applying this update, make sure all previously released errata

relevant to your system have been applied.

 

This update is available via the Red Hat Network. Details on how to use the

Red Hat Network to apply this update are available at

https://access.redhat.com/articles/11258

 

5. Bugs fixed (https://bugzilla.redhat.com/):

 

1176032 - CVE-2014-9293 ntp: automatic generation of weak default key in config_auth()

1176035 - CVE-2014-9294 ntp: ntp-keygen uses weak random number generator and seed when generating MD5 keys

1176037 - CVE-2014-9295 ntp: Multiple buffer overflows via specially-crafted packets

1176040 - CVE-2014-9296 ntp: receive() missing return on error

 

6. Package List:

 

Red Hat Enterprise Linux Desktop (v. 6):

 

Source:

ntp-4.2.6p5-2.el6_6.src.rpm

 

i386:

ntp-4.2.6p5-2.el6_6.i686.rpm

ntp-debuginfo-4.2.6p5-2.el6_6.i686.rpm

ntpdate-4.2.6p5-2.el6_6.i686.rpm

 

x86_64:

ntp-4.2.6p5-2.el6_6.x86_64.rpm

ntp-debuginfo-4.2.6p5-2.el6_6.x86_64.rpm

ntpdate-4.2.6p5-2.el6_6.x86_64.rpm

 

Red Hat Enterprise Linux Desktop Optional (v. 6):

 

i386:

ntp-debuginfo-4.2.6p5-2.el6_6.i686.rpm

ntp-perl-4.2.6p5-2.el6_6.i686.rpm

 

noarch:

ntp-doc-4.2.6p5-2.el6_6.noarch.rpm

 

x86_64:

ntp-debuginfo-4.2.6p5-2.el6_6.x86_64.rpm

ntp-perl-4.2.6p5-2.el6_6.x86_64.rpm

 

Red Hat Enterprise Linux HPC Node (v. 6):

 

Source:

ntp-4.2.6p5-2.el6_6.src.rpm

 

x86_64:

ntp-4.2.6p5-2.el6_6.x86_64.rpm

ntp-debuginfo-4.2.6p5-2.el6_6.x86_64.rpm

ntpdate-4.2.6p5-2.el6_6.x86_64.rpm

 

Red Hat Enterprise Linux HPC Node Optional (v. 6):

 

noarch:

ntp-doc-4.2.6p5-2.el6_6.noarch.rpm

 

x86_64:

ntp-debuginfo-4.2.6p5-2.el6_6.x86_64.rpm

ntp-perl-4.2.6p5-2.el6_6.x86_64.rpm

 

Red Hat Enterprise Linux Server (v. 6):

 

Source:

ntp-4.2.6p5-2.el6_6.src.rpm

 

i386:

ntp-4.2.6p5-2.el6_6.i686.rpm

ntp-debuginfo-4.2.6p5-2.el6_6.i686.rpm

ntpdate-4.2.6p5-2.el6_6.i686.rpm

 

ppc64:

ntp-4.2.6p5-2.el6_6.ppc64.rpm

ntp-debuginfo-4.2.6p5-2.el6_6.ppc64.rpm

ntpdate-4.2.6p5-2.el6_6.ppc64.rpm

 

s390x:

ntp-4.2.6p5-2.el6_6.s390x.rpm

ntp-debuginfo-4.2.6p5-2.el6_6.s390x.rpm

ntpdate-4.2.6p5-2.el6_6.s390x.rpm

 

x86_64:

ntp-4.2.6p5-2.el6_6.x86_64.rpm

ntp-debuginfo-4.2.6p5-2.el6_6.x86_64.rpm

ntpdate-4.2.6p5-2.el6_6.x86_64.rpm

 

Red Hat Enterprise Linux Server Optional (v. 6):

 

i386:

ntp-debuginfo-4.2.6p5-2.el6_6.i686.rpm

ntp-perl-4.2.6p5-2.el6_6.i686.rpm

 

noarch:

ntp-doc-4.2.6p5-2.el6_6.noarch.rpm

 

ppc64:

ntp-debuginfo-4.2.6p5-2.el6_6.ppc64.rpm

ntp-perl-4.2.6p5-2.el6_6.ppc64.rpm

 

s390x:

ntp-debuginfo-4.2.6p5-2.el6_6.s390x.rpm

ntp-perl-4.2.6p5-2.el6_6.s390x.rpm

 

x86_64:

ntp-debuginfo-4.2.6p5-2.el6_6.x86_64.rpm

ntp-perl-4.2.6p5-2.el6_6.x86_64.rpm

 

Red Hat Enterprise Linux Workstation (v. 6):

 

Source:

ntp-4.2.6p5-2.el6_6.src.rpm

 

i386:

ntp-4.2.6p5-2.el6_6.i686.rpm

ntp-debuginfo-4.2.6p5-2.el6_6.i686.rpm

ntpdate-4.2.6p5-2.el6_6.i686.rpm

 

x86_64:

ntp-4.2.6p5-2.el6_6.x86_64.rpm

ntp-debuginfo-4.2.6p5-2.el6_6.x86_64.rpm

ntpdate-4.2.6p5-2.el6_6.x86_64.rpm

 

Red Hat Enterprise Linux Workstation Optional (v. 6):

 

i386:

ntp-debuginfo-4.2.6p5-2.el6_6.i686.rpm

ntp-perl-4.2.6p5-2.el6_6.i686.rpm

 

noarch:

ntp-doc-4.2.6p5-2.el6_6.noarch.rpm

 

x86_64:

ntp-debuginfo-4.2.6p5-2.el6_6.x86_64.rpm

ntp-perl-4.2.6p5-2.el6_6.x86_64.rpm

 

Red Hat Enterprise Linux Client (v. 7):

 

Source:

ntp-4.2.6p5-19.el7_0.src.rpm

 

x86_64:

ntp-4.2.6p5-19.el7_0.x86_64.rpm

ntp-debuginfo-4.2.6p5-19.el7_0.x86_64.rpm

ntpdate-4.2.6p5-19.el7_0.x86_64.rpm

 

Red Hat Enterprise Linux Client Optional (v. 7):

 

noarch:

ntp-doc-4.2.6p5-19.el7_0.noarch.rpm

ntp-perl-4.2.6p5-19.el7_0.noarch.rpm

 

x86_64:

ntp-debuginfo-4.2.6p5-19.el7_0.x86_64.rpm

sntp-4.2.6p5-19.el7_0.x86_64.rpm

 

Red Hat Enterprise Linux ComputeNode (v. 7):

 

Source:

ntp-4.2.6p5-19.el7_0.src.rpm

 

x86_64:

ntp-4.2.6p5-19.el7_0.x86_64.rpm

ntp-debuginfo-4.2.6p5-19.el7_0.x86_64.rpm

ntpdate-4.2.6p5-19.el7_0.x86_64.rpm

 

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

 

noarch:

ntp-doc-4.2.6p5-19.el7_0.noarch.rpm

ntp-perl-4.2.6p5-19.el7_0.noarch.rpm

 

x86_64:

ntp-debuginfo-4.2.6p5-19.el7_0.x86_64.rpm

sntp-4.2.6p5-19.el7_0.x86_64.rpm

 

Red Hat Enterprise Linux Server (v. 7):

 

Source:

ntp-4.2.6p5-19.el7_0.src.rpm

 

ppc64:

ntp-4.2.6p5-19.el7_0.ppc64.rpm

ntp-debuginfo-4.2.6p5-19.el7_0.ppc64.rpm

ntpdate-4.2.6p5-19.el7_0.ppc64.rpm

 

s390x:

ntp-4.2.6p5-19.el7_0.s390x.rpm

ntp-debuginfo-4.2.6p5-19.el7_0.s390x.rpm

ntpdate-4.2.6p5-19.el7_0.s390x.rpm

 

x86_64:

ntp-4.2.6p5-19.el7_0.x86_64.rpm

ntp-debuginfo-4.2.6p5-19.el7_0.x86_64.rpm

ntpdate-4.2.6p5-19.el7_0.x86_64.rpm

 

Red Hat Enterprise Linux Server Optional (v. 7):

 

noarch:

ntp-doc-4.2.6p5-19.el7_0.noarch.rpm

ntp-perl-4.2.6p5-19.el7_0.noarch.rpm

 

ppc64:

ntp-debuginfo-4.2.6p5-19.el7_0.ppc64.rpm

sntp-4.2.6p5-19.el7_0.ppc64.rpm

 

s390x:

ntp-debuginfo-4.2.6p5-19.el7_0.s390x.rpm

sntp-4.2.6p5-19.el7_0.s390x.rpm

 

x86_64:

ntp-debuginfo-4.2.6p5-19.el7_0.x86_64.rpm

sntp-4.2.6p5-19.el7_0.x86_64.rpm

 

Red Hat Enterprise Linux Workstation (v. 7):

 

Source:

ntp-4.2.6p5-19.el7_0.src.rpm

 

x86_64:

ntp-4.2.6p5-19.el7_0.x86_64.rpm

ntp-debuginfo-4.2.6p5-19.el7_0.x86_64.rpm

ntpdate-4.2.6p5-19.el7_0.x86_64.rpm

 

Red Hat Enterprise Linux Workstation Optional (v. 7):

 

noarch:

ntp-doc-4.2.6p5-19.el7_0.noarch.rpm

ntp-perl-4.2.6p5-19.el7_0.noarch.rpm

 

x86_64:

ntp-debuginfo-4.2.6p5-19.el7_0.x86_64.rpm

sntp-4.2.6p5-19.el7_0.x86_64.rpm

 

These packages are GPG signed by Red Hat for security. Our key and

details on how to verify the signature are available from

https://access.redhat.com/security/team/key/

 

7. References:

 

https://access.redhat.com/security/cve/CVE-2014-9293

https://access.redhat.com/security/cve/CVE-2014-9294

https://access.redhat.com/security/cve/CVE-2014-9295

https://access.redhat.com/security/cve/CVE-2014-9296

https://access.redhat.com/security/updates/classification/#important

 

8. Contact:

 

The Red Hat security contact is . More contact

details at https://access.redhat.com/security/team/contact/

 

Copyright 2014 Red Hat, Inc.

-----BEGIN PGP SIGNATURE-----

Version: GnuPG v1

 

iD8DBQFUlOKcXlSAg2UNWIIRAvBoAKCfw+j4ua5JaIRMc5eKkny9G1yWlgCgufNc

EvBImTd+Vq7//UExow1FP4U=

=m/Eb

-----END PGP SIGNATURE-----

 

 

--

 

Share this post


Link to post

Please sign in to comment

You will be able to leave a comment after signing in



Sign In Now
Sign in to follow this  

×