Bug 1184572 (CVE-2014-9298, CVE-2014-9751)

Summary: CVE-2014-9298 CVE-2014-9751 ntp: drop packets with source address ::1
Product: [Other] Security Response Reporter: Vasyl Kaigorodov <vkaigoro>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: fweimer, mlichvar, mprpic, sardella, security-response-team
Target Milestone: ---Keywords: Reopened, Security
Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: Doc Type: Bug Fix
Doc Text:
It was found that because NTP's access control was based on a source IP address, an attacker could bypass source IP restrictions and send malicious control and configuration packets by spoofing ::1 addresses.
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-06-08 02:38:21 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1189413, 1193497, 1193501, 1221565    
Bug Blocks: 1184574, 1189411, 1193283, 1210268    

Description Vasyl Kaigorodov 2015-01-21 16:56:03 UTC
It was reported [1] that ntp allows bypassing source IP ACLs on some OSes when ::1 spoofed.

Upstream commits that fixes this:

[1]: http://bugs.ntp.org/2672

Comment 1 Martin Prpič 2015-02-05 09:49:54 UTC
*** Bug 1189410 has been marked as a duplicate of this bug. ***

Comment 2 Martin Prpič 2015-02-05 09:52:23 UTC
External References:


Comment 3 Florian Weimer 2015-02-05 10:09:59 UTC
This phenomenon is discussed in the knowledgebase article: https://access.redhat.com/articles/1305723

Comment 4 Fedora Update System 2015-02-15 03:17:17 UTC
ntp-4.2.6p5-20.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 5 Fedora Update System 2015-02-15 03:25:34 UTC
ntp-4.2.6p5-27.fc21 has been pushed to the Fedora 21 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 7 Vincent Danen 2015-02-25 17:26:36 UTC

This issue affects the versions of ntp as shipped with Red Hat Enterprise Linux 5.

Red Hat Enterprise Linux 5 is now in Production 3 Phase of the support and maintenance life cycle. This has been rated as having Moderate security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.

To mitigate this issue, you may use the ip6tables command to prevent spoofing of local addresses on any network interface other than the loopback interface.  Refer to the Mitigation section on our KBase article: https://access.redhat.com/articles/1305723

Comment 9 errata-xmlrpc 2015-07-22 07:00:23 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2015:1459 https://rhn.redhat.com/errata/RHSA-2015-1459.html

Comment 12 Tomas Hoger 2015-10-15 20:18:54 UTC
The CVE-2014-9298 (and CVE-2014-9297) was rejected, apparently because of an incorrect use on some unspecified place, where ids were ids were probably swapped.  CVE-2014-9751 is now expected to be used for the issue the CVE-2014-9298 previously referred to.  This bug report was previously updated to replace rejected CVE id with the new one.  However, as the rejected id was already used in a released RHSA and is still the only id listed on the upstream security pages, I'm re-adding the rejected id here.  Released RHSA erratum was updated to also list the new CVE id as fixed.

Comment 13 errata-xmlrpc 2015-11-19 08:37:47 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2015:2231 https://rhn.redhat.com/errata/RHSA-2015-2231.html