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Sicherheit: Denial of Service in chrony
Aktuelle Meldungen Distributionen
Name: Denial of Service in chrony
ID: FEDORA-2014-1943
Distribution: Fedora
Plattformen: Fedora 20
Datum: Do, 6. Februar 2014, 07:35
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0021
Applikationen: chrony

Originalnachricht

Name        : chrony
Product : Fedora 20
Version : 1.29.1
Release : 1.fc20
URL : http://chrony.tuxfamily.org
Summary : An NTP client/server
Description :
A client/server for the Network Time Protocol, this program keeps your
computer's clock accurate. It was specially designed to support
systems with intermittent internet connections, but it also works well
in permanently connected environments. It can use also hardware reference
clocks, system real-time clock or manual input as time references.

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Update Information:

This update fixes the following security vulnerability:

- Modify chronyc protocol to prevent amplification attacks (CVE-2014-0021)
(incompatible with previous protocol version, chronyc supports both)

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ChangeLog:

* Fri Jan 31 2014 Miroslav Lichvar <mlichvar@redhat.com> 1.29.1-1
- update to 1.29.1 (CVE-2014-0021)
- replace hardening build flags with _hardened_build
* Tue Nov 19 2013 Miroslav Lichvar <mlichvar@redhat.com> 1.29-3
- let systemd remove pid file (#974305)
* Thu Oct 3 2013 Miroslav Lichvar <mlichvar@redhat.com> 1.29-2
- add ordering dependency to not start chronyd before ntpd stopped
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References:

[ 1 ] Bug #1054790 - CVE-2014-0021 chrony: DDoS via amplification in cmdmon
protocol
https://bugzilla.redhat.com/show_bug.cgi?id=1054790
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This update can be installed with the "yum" update program. Use
su -c 'yum update chrony' at the command line.
For more information, refer to "Managing Software with yum",
available at http://docs.fedoraproject.org/yum/.

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/keys
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