CVE-2015-5300
Description
The panic_gate check in NTP before 4.2.8p5 is only re-enabled after the first change to the system clock that was greater than 128 milliseconds by default, which allows remote attackers to set NTP to an arbitrary time when started with the -g option, or to alter the time by up to 900 seconds otherwise by responding to an unspecified number of requests from trusted sources, and leveraging a resulting denial of service (abort and restart).
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No vendor mitigations ingested yet for this CVE. The mitigation-content worker queues fetches as references arrive — check back in a few minutes, or see the references list below.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| rhel | 6.0 | affected | |
| rhel | 7.0 | affected | |
| ubuntu | 12.04 | affected | |
| ubuntu | 14.04 | affected | |
| ubuntu | 15.04 | affected | |
| ubuntu | 15.10 | affected | |
| fedora | 21 | affected | |
| fedora | 22 | affected | |
| suse | 42.1 | affected | |
| suse | 13.2 | affected | |
| suse | 12 | affected | |
| suse | 10 | affected | |
| suse | 11 | affected | |
| debian | 7.0 | affected | |
| debian | 8.0 | affected | |
| debian | bullseye | fixed | 1:4.2.8p4+dfsg-2 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| suse | linux_enterprise_debuginfo | 11 | |
| ntp | ntp | {"endIncluding":"4.2.8"} | |
References
- http://aix.software.ibm.com/aix/efixes/security/ntp_advisory5.asc
- http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170684.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170926.html
- http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177507.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00059.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00060.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00038.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.html
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html
- http://lists.opensuse.org/opensuse-updates/2016-05/msg00114.html
- http://rhn.redhat.com/errata/RHSA-2015-1930.html
- http://seclists.org/bugtraq/2016/Feb/164
- http://support.ntp.org/bin/view/Main/NtpBug2956
- http://support.ntp.org/bin/view/Main/SecurityNotice#January_2016_NTP_4_2_8p5_Securit
- http://www.debian.org/security/2015/dsa-3388
- http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
- http://www.securityfocus.com/bid/77312
- http://www.securitytracker.com/id/1034670
- http://www.ubuntu.com/usn/USN-2783-1
- https://bto.bluecoat.com/security-advisory/sa113
- https://bugzilla.redhat.com/show_bug.cgi?id=1271076
- https://ics-cert.us-cert.gov/advisories/ICSA-15-356-01
- https://security.netapp.com/advisory/ntap-20171004-0001/
CWEs
CWE-361
💬 Discuss CVE-2015-5300 on VIR Community →
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.