Bug 1255118 - (CVE-2015-5219) CVE-2015-5219 ntp: infinite loop in sntp processing crafted packet
CVE-2015-5219 ntp: infinite loop in sntp processing crafted packet
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
low Severity low
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Assigned To: Red Hat Product Security
impact=low,public=20150825,reported=2...
: Reopened, Security
Depends On: 1256680 1296209 1317795
Blocks: 1254549 1323912
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Reported: 2015-08-19 13:02 EDT by Florian Weimer
Modified: 2016-11-06 00:13 EDT (History)
3 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
It was discovered that the sntp utility could become unresponsive due to being caught in an infinite loop when processing a crafted NTP packet.
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Last Closed: 2016-11-06 00:13:16 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Florian Weimer 2015-08-19 13:02:09 EDT
It was discovered that sntp program would hang in an infinite loop when a crafted NTP packet was received, related to the conversion of the precision value in the packet to double.
Comment 2 Florian Weimer 2015-08-25 05:09:35 EDT
Created ntp tracking bugs for this issue:

Affects: fedora-all [bug 1256680]
Comment 4 Fedora Update System 2015-08-25 06:59:59 EDT
ntp-4.2.6p5-33.fc21 has been submitted as an update to Fedora 21. https://bodhi.fedoraproject.org/updates/FEDORA-2015-14211
Comment 5 Fedora Update System 2015-08-25 07:03:39 EDT
ntp-4.2.6p5-33.fc22 has been submitted as an update to Fedora 22. https://bodhi.fedoraproject.org/updates/FEDORA-2015-14212
Comment 6 Fedora Update System 2015-08-25 07:05:38 EDT
ntp-4.2.6p5-33.fc23 has been submitted as an update to Fedora 23. https://bodhi.fedoraproject.org/updates/FEDORA-2015-14213
Comment 7 Fedora Update System 2015-08-26 00:25:37 EDT
ntp-4.2.6p5-33.fc23 has been pushed to the Fedora 23 testing repository. If problems still persist, please make note of it in this bug report.\nIf you want to test the update, you can install it with \n su -c 'yum --enablerepo=updates-testing update ntp'. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2015-14213
Comment 8 Fedora Update System 2015-08-26 13:25:00 EDT
ntp-4.2.6p5-33.fc21 has been pushed to the Fedora 21 testing repository. If problems still persist, please make note of it in this bug report.\nIf you want to test the update, you can install it with \n su -c 'yum --enablerepo=updates-testing update ntp'. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2015-14211
Comment 9 Fedora Update System 2015-08-26 13:27:34 EDT
ntp-4.2.6p5-33.fc22 has been pushed to the Fedora 22 testing repository. If problems still persist, please make note of it in this bug report.\nIf you want to test the update, you can install it with \n su -c 'yum --enablerepo=updates-testing update ntp'. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2015-14212
Comment 10 Fedora Update System 2015-09-20 11:22:59 EDT
ntp-4.2.6p5-33.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
Comment 11 Fedora Update System 2015-10-11 22:18:29 EDT
ntp-4.2.6p5-33.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
Comment 13 Fedora Update System 2015-11-04 17:50:18 EST
ntp-4.2.6p5-34.fc21 has been pushed to the Fedora 21 stable repository. If problems still persist, please make note of it in this bug report.
Comment 16 Martin Prpič 2016-05-04 05:41:17 EDT
Acknowledgements:

This issue was discovered by Miroslav Lichvar of Red Hat.
Comment 17 errata-xmlrpc 2016-05-10 16:17:13 EDT
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2016:0780 https://rhn.redhat.com/errata/RHSA-2016-0780.html
Comment 18 errata-xmlrpc 2016-11-03 15:32:49 EDT
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2016:2583 https://rhn.redhat.com/errata/RHSA-2016-2583.html

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