CVE-2015-5300
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
02 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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 9.13% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 95.0% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2017-07-21 14:00Z9 YR AGO
- Last updated
- 2024-08-06 06:41Z2 YR AGO
- Reserved
- 2015-07-01
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- 0a04b5569df01e3f4f9f59e9fed2e065fb1a2f951dcb109b90443b8a27b66011
05 Affected products
06 References
- rhn.redhat.comRHSA-2015:1930http://rhn.redhat.com/errata/RHSA-2015-1930.html
- lists.opensuse.orgSUSE-SU:2016:1912http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html
- seclists.org[slackware-security] 20160223 ntp (SSA:2016-054-04)http://seclists.org/bugtraq/2016/Feb/164
- lists.opensuse.orgopenSUSE-SU:2016:1423http://lists.opensuse.org/opensuse-updates/2016-05/msg00114.html
- www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
- www.ubuntu.comUSN-2783-1http://www.ubuntu.com/usn/USN-2783-1
- lists.opensuse.orgSUSE-SU:2016:1177http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00060.html
- ics-cert.us-cert.govhttps://ics-cert.us-cert.gov/advisories/ICSA-15-356-01
- www.oracle.comhttps://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- support.ntp.orghttp://support.ntp.org/bin/view/Main/SecurityNotice#January_2016_NTP_4_2_8p5_Securit
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1271076
- www-01.ibm.comhttps://www-01.ibm.com/support/docview.wss?uid=swg21980676
- support.citrix.comhttps://support.citrix.com/article/CTX220112
- lists.fedoraproject.orgFEDORA-2015-77bfbc1bcdhttp://lists.fedoraproject.org/pipermail/package-announce/2015-November/170926.html
- www.ibm.comhttps://www.ibm.com/support/home/docdisplay?lndocid=migr-5099428
- lists.fedoraproject.orgFEDORA-2015-f5f5ec7b6bhttp://lists.fedoraproject.org/pipermail/package-announce/2015-November/170684.html
- www.debian.orgDSA-3388http://www.debian.org/security/2015/dsa-3388
- www.oracle.comhttps://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html
- aix.software.ibm.comhttp://aix.software.ibm.com/aix/efixes/security/ntp_advisory5.asc
- www.cs.bu.eduhttps://www.cs.bu.edu/~goldbe/NTPattack.html
- lists.opensuse.orgSUSE-SU:2016:2094http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html
- lists.fedoraproject.orgFEDORA-2016-34bc10a2c8http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177507.html
- www.securitytracker.com1034670http://www.securitytracker.com/id/1034670
- www-01.ibm.comhttps://www-01.ibm.com/support/docview.wss?uid=isg3T1024073
- www.securityfocus.com77312http://www.securityfocus.com/bid/77312
- lists.opensuse.orgSUSE-SU:2016:1311http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.html
- www.freebsd.orgFreeBSD-SA-16:02https://www.freebsd.org/security/advisories/FreeBSD-SA-16:02.ntp.asc
- www-01.ibm.comhttps://www-01.ibm.com/support/docview.wss?uid=swg21979393
- lists.opensuse.orgopenSUSE-SU:2016:1292http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00038.html
- www-01.ibm.comhttps://www-01.ibm.com/support/docview.wss?uid=nas8N1021264
- lists.opensuse.orgSUSE-SU:2016:1247http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.html
- www-01.ibm.comhttps://www-01.ibm.com/support/docview.wss?uid=isg3T1023885
- bto.bluecoat.comhttps://bto.bluecoat.com/security-advisory/sa113
- www-01.ibm.comhttps://www-01.ibm.com/support/docview.wss?uid=swg21983501
- www-01.ibm.comhttps://www-01.ibm.com/support/docview.wss?uid=ssg1S1005821
- support.ntp.orghttp://support.ntp.org/bin/view/Main/NtpBug2956
- www-01.ibm.comhttps://www-01.ibm.com/support/docview.wss?uid=swg21983506
- lists.opensuse.orgSUSE-SU:2016:1175http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00059.html
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20171004-0001/
07 Fixed in
Debian 11
- ntp Fixed in 1:4.2.8p4+dfsg-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- ntp Fixed in 1:4.2.6.p5+dfsg-3ubuntu2.14.04.5
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.