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Fedora Update Notification
FEDORA-2015-5874
2015-04-09 05:00:34
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Name        : ntp
Product     : Fedora 20
Version     : 4.2.6p5
Release     : 22.fc20
URL         : http://www.ntp.org
Summary     : The NTP daemon and utilities
Description :
The Network Time Protocol (NTP) is used to synchronize a computer's
time with another reference time source. This package includes ntpd
(a daemon which continuously adjusts system time) and utilities used
to query and configure the ntpd daemon.

Perl scripts ntp-wait and ntptrace are in the ntp-perl package,
ntpdate is in the ntpdate package and sntp is in the sntp package.
The documentation is in the ntp-doc package.

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Update Information:

Security fix for CVE-2015-1799, CVE-2015-1798, #1210324
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ChangeLog:

* Tue Apr 14 2015 Miroslav Lichvar  4.2.6p5-22
- fix generation of MD5 keys with ntp-keygen on big-endian systems (#1210324)
* Wed Apr  8 2015 Miroslav Lichvar  4.2.6p5-21
- reject packets without MAC when authentication is enabled (CVE-2015-1798)
- protect symmetric associations with symmetric key against DoS attack
  (CVE-2015-1799)
* Thu Feb  5 2015 Miroslav Lichvar  4.2.6p5-20
- validate lengths of values in extension fields (CVE-2014-9297)
- drop packets with spoofed source address ::1 (CVE-2014-9298)
* Fri Dec 19 2014 Miroslav Lichvar  4.2.6p5-19
- don't generate weak control key for resolver (CVE-2014-9293)
- don't generate weak MD5 keys in ntp-keygen (CVE-2014-9294)
- fix buffer overflows via specially-crafted packets (CVE-2014-9295)
- don't mobilize passive association when authentication fails (CVE-2014-9296)
* Mon Dec  9 2013 Miroslav Lichvar  4.2.6p5-18
- fix calculation of root dispersion (#1037981)
- refresh peers on routing updates (#1028176)
- drop patch allowing -p and -u options to be used twice (#639101)
- remove unnecessary IPv6 restrict line from default ntp.conf
- replace hardening build flags with _hardened_build
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References:

  [ 1 ] Bug #1199435 - CVE-2015-1799 ntp: authentication doesn't protect symmetric associations against DoS attacks
        https://bugzilla.redhat.com/show_bug.cgi?id=1199435
  [ 2 ] Bug #1199430 - CVE-2015-1798 ntp: ntpd accepts unauthenticated packets with symmetric key crypto
        https://bugzilla.redhat.com/show_bug.cgi?id=1199430
  [ 3 ] Bug #1210324 - ntp: ntp-keygen may generate non-random symmetric keys on big-endian systems
        https://bugzilla.redhat.com/show_bug.cgi?id=1210324
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This update can be installed with the "yum" update program.  Use
su -c 'yum update ntp' at the command line.
For more information, refer to "Managing Software with yum",
available at .

All packages are signed with the Fedora Project GPG key.  More details on the
GPG keys used by the Fedora Project can be found at
https://fedoraproject.org/security/
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