Bug 1340860 (CVE-2016-4956)
| Summary: | CVE-2016-4956 ntp: broadcast interleave (incomplete fix for CVE-2016-1548) | ||
|---|---|---|---|
| Product: | [Other] Security Response | Reporter: | Martin Prpič <mprpic> |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED WONTFIX | QA Contact: | |
| Severity: | low | Docs Contact: | |
| Priority: | low | ||
| Version: | unspecified | CC: | harkanwal.johar, mlichvar, sardella, security-response-team |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | ntp 4.2.8p8 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2016-05-30 13:18:34 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: | 1342128 | ||
| Bug Blocks: | 1302226 | ||
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Description
Martin Prpič
2016-05-30 12:45:52 UTC
Acknowledgments: Name: Miroslav Lichvar (Red Hat) Mitigation: Do not use NTP's broadcast mode in the clients by not configuring the "broadcastclient" directive in the ntp.conf file. Created ntp tracking bugs for this issue: Affects: fedora-all [bug 1342128] Upstream bug: http://support.ntp.org/bin/view/Main/NtpBug3042 External References: http://support.ntp.org/bin/view/Main/SecurityNotice#June_2016_ntp_4_2_8p8_NTP_Securi Could anyone suggest any specific reason of closing the bug without fixing it. Secondly advisory for customers who have these vulnerabilities (In reply to Harkanwal from comment #5) > Could anyone suggest any specific reason of closing the bug without fixing > it. Secondly advisory for customers who have these vulnerabilities Hi, this issue was rated as having a Low security impact. It only affects clients that are configured to use the broadcast mode. Plus, an attacker would need to have access to an ntpd server to trigger the issue on a given client. All of this combined means that this issue is very unlikely to be exloited, and thus is not planned to be fixed. We may revisit this issue in a future minor RHEL release. ntp-4.2.6p5-41.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report. ntp-4.2.6p5-41.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report. ntp-4.2.6p5-41.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report. |