RedHat: Important: ntp security update
Summary
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.
(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. (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.
Summary
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
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/#important
Package List
Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
i386:
ntp-4.2.2p1-9.el5_3.2.i386.rpm
ntp-debuginfo-4.2.2p1-9.el5_3.2.i386.rpm
x86_64:
ntp-4.2.2p1-9.el5_3.2.x86_64.rpm
ntp-debuginfo-4.2.2p1-9.el5_3.2.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
i386:
ntp-4.2.2p1-9.el5_3.2.i386.rpm
ntp-debuginfo-4.2.2p1-9.el5_3.2.i386.rpm
ia64:
ntp-4.2.2p1-9.el5_3.2.ia64.rpm
ntp-debuginfo-4.2.2p1-9.el5_3.2.ia64.rpm
ppc:
ntp-4.2.2p1-9.el5_3.2.ppc.rpm
ntp-debuginfo-4.2.2p1-9.el5_3.2.ppc.rpm
s390x:
ntp-4.2.2p1-9.el5_3.2.s390x.rpm
ntp-debuginfo-4.2.2p1-9.el5_3.2.s390x.rpm
x86_64:
ntp-4.2.2p1-9.el5_3.2.x86_64.rpm
ntp-debuginfo-4.2.2p1-9.el5_3.2.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
Topic
An updated ntp package that fixes two security issues is now available forRed Hat Enterprise Linux 5.This update has been rated as having important security impact by the RedHat Security Response Team.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Bugs Fixed
490617 - CVE-2009-0159 ntp: buffer overflow in ntpq
499694 - CVE-2009-1252 ntp: remote arbitrary code execution vulnerability if autokeys is enabled