Bug 1255118 (CVE-2015-5219)

Summary: CVE-2015-5219 ntp: infinite loop in sntp processing crafted packet
Product: [Other] Security Response Reporter: Florian Weimer <fweimer>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: mlichvar, sardella, security-response-team
Target Milestone: ---Keywords: Reopened, Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
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.
Story Points: ---
Clone Of: Environment:
Last Closed: 2016-11-06 04:13:16 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1256680, 1296209, 1317795    
Bug Blocks: 1254549, 1323912    

Description Florian Weimer 2015-08-19 17:02:09 UTC
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 09:09:35 UTC
Created ntp tracking bugs for this issue:

Affects: fedora-all [bug 1256680]

Comment 4 Fedora Update System 2015-08-25 10:59:59 UTC
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 11:03:39 UTC
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 11:05:38 UTC
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 04:25:37 UTC
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 17:25:00 UTC
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 17:27:34 UTC
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 15:22:59 UTC
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 2015-10-12 02:18:29 UTC
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 22:50:18 UTC
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 09:41:17 UTC
Acknowledgements:

This issue was discovered by Miroslav Lichvar of Red Hat.

Comment 17 errata-xmlrpc 2016-05-10 20:17:13 UTC
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 19:32:49 UTC
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