RHSA-2009:1040-02 Critical: ntp security update
Posted on: 05/18/2009 10:15 PM

A new update is available for Red Hat Enterprise Linux. Here the announcement:

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Red Hat Security Advisory

Synopsis: Critical: ntp security update
Advisory ID: RHSA-2009:1040-02
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2009-1040.html
Issue date: 2009-05-18
CVE Names: CVE-2009-0159 CVE-2009-1252
=====================================================================

1. Summary:

An updated ntp package that fixes two security issues is now available for
Red Hat Enterprise Linux 4.

This update has been rated as having critical security impact by the Red
Hat Security Response Team.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux AS version 4.7.z - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux Desktop version 4 - i386, x86_64
Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux ES version 4.7.z - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64

3. Description:

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

A buffer overflow flaw was discovered in the ntpd daemon's NTPv4
authentication code. If ntpd was configured to use public key cryptography
for NTP packet authentication, a remote attacker could use this flaw to
send a specially-crafted request packet that could crash ntpd or,
potentially, execute arbitrary code with the privileges of the "ntp" user.
(CVE-2009-1252)

Note: NTP authentication is not enabled by default.

A buffer overflow flaw was found in the ntpq diagnostic command. A
malicious, remote server could send a specially-crafted reply to an ntpq
request that could crash ntpq or, potentially, execute arbitrary code with
the privileges of the user running the ntpq command. (CVE-2009-0159)

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 be restarted automatically.

4. Solution:

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

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

490617 - CVE-2009-0159 ntp: buffer overflow in ntpq
499694 - CVE-2009-1252 ntp: remote arbitrary code execution vulnerability if autokeys is enabled

6. Package List:

Red Hat Enterprise Linux AS version 4:

Source:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/ntp-4.2.0.a.20040617-8.el4_7.2.src.rpm

i386:
ntp-4.2.0.a.20040617-8.el4_7.2.i386.rpm
ntp-debuginfo-4.2.0.a.20040617-8.el4_7.2.i386.rpm

ia64:
ntp-4.2.0.a.20040617-8.el4_7.2.ia64.rpm
ntp-debuginfo-4.2.0.a.20040617-8.el4_7.2.ia64.rpm

ppc:
ntp-4.2.0.a.20040617-8.el4_7.2.ppc.rpm
ntp-debuginfo-4.2.0.a.20040617-8.el4_7.2.ppc.rpm

s390:
ntp-4.2.0.a.20040617-8.el4_7.2.s390.rpm
ntp-debuginfo-4.2.0.a.20040617-8.el4_7.2.s390.rpm

s390x:
ntp-4.2.0.a.20040617-8.el4_7.2.s390x.rpm
ntp-debuginfo-4.2.0.a.20040617-8.el4_7.2.s390x.rpm

x86_64:
ntp-4.2.0.a.20040617-8.el4_7.2.x86_64.rpm
ntp-debuginfo-4.2.0.a.20040617-8.el4_7.2.x86_64.rpm

Red Hat Enterprise Linux AS version 4.7.z:

Source:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/ntp-4.2.0.a.20040617-8.el4_7.2.src.rpm

i386:
ntp-4.2.0.a.20040617-8.el4_7.2.i386.rpm
ntp-debuginfo-4.2.0.a.20040617-8.el4_7.2.i386.rpm

ia64:
ntp-4.2.0.a.20040617-8.el4_7.2.ia64.rpm
ntp-debuginfo-4.2.0.a.20040617-8.el4_7.2.ia64.rpm

ppc:
ntp-4.2.0.a.20040617-8.el4_7.2.ppc.rpm
ntp-debuginfo-4.2.0.a.20040617-8.el4_7.2.ppc.rpm

s390:
ntp-4.2.0.a.20040617-8.el4_7.2.s390.rpm
ntp-debuginfo-4.2.0.a.20040617-8.el4_7.2.s390.rpm

s390x:
ntp-4.2.0.a.20040617-8.el4_7.2.s390x.rpm
ntp-debuginfo-4.2.0.a.20040617-8.el4_7.2.s390x.rpm

x86_64:
ntp-4.2.0.a.20040617-8.el4_7.2.x86_64.rpm
ntp-debuginfo-4.2.0.a.20040617-8.el4_7.2.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

Source:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/ntp-4.2.0.a.20040617-8.el4_7.2.src.rpm

i386:
ntp-4.2.0.a.20040617-8.el4_7.2.i386.rpm
ntp-debuginfo-4.2.0.a.20040617-8.el4_7.2.i386.rpm

x86_64:
ntp-4.2.0.a.20040617-8.el4_7.2.x86_64.rpm
ntp-debuginfo-4.2.0.a.20040617-8.el4_7.2.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

Source:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/ntp-4.2.0.a.20040617-8.el4_7.2.src.rpm

i386:
ntp-4.2.0.a.20040617-8.el4_7.2.i386.rpm
ntp-debuginfo-4.2.0.a.20040617-8.el4_7.2.i386.rpm

ia64:
ntp-4.2.0.a.20040617-8.el4_7.2.ia64.rpm
ntp-debuginfo-4.2.0.a.20040617-8.el4_7.2.ia64.rpm

x86_64:
ntp-4.2.0.a.20040617-8.el4_7.2.x86_64.rpm
ntp-debuginfo-4.2.0.a.20040617-8.el4_7.2.x86_64.rpm

Red Hat Enterprise Linux ES version 4.7.z:

Source:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/ntp-4.2.0.a.20040617-8.el4_7.2.src.rpm

i386:
ntp-4.2.0.a.20040617-8.el4_7.2.i386.rpm
ntp-debuginfo-4.2.0.a.20040617-8.el4_7.2.i386.rpm

ia64:
ntp-4.2.0.a.20040617-8.el4_7.2.ia64.rpm
ntp-debuginfo-4.2.0.a.20040617-8.el4_7.2.ia64.rpm

x86_64:
ntp-4.2.0.a.20040617-8.el4_7.2.x86_64.rpm
ntp-debuginfo-4.2.0.a.20040617-8.el4_7.2.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

Source:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/ntp-4.2.0.a.20040617-8.el4_7.2.src.rpm

i386:
ntp-4.2.0.a.20040617-8.el4_7.2.i386.rpm
ntp-debuginfo-4.2.0.a.20040617-8.el4_7.2.i386.rpm

ia64:
ntp-4.2.0.a.20040617-8.el4_7.2.ia64.rpm
ntp-debuginfo-4.2.0.a.20040617-8.el4_7.2.ia64.rpm

x86_64:
ntp-4.2.0.a.20040617-8.el4_7.2.x86_64.rpm
ntp-debuginfo-4.2.0.a.20040617-8.el4_7.2.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://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0159
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1252
http://www.redhat.com/security/updates/classification/#critical

8. Contact:

The Red Hat security contact is lt;secalert@redhat.comgt;. More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2009 Red Hat, Inc.
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