CVE-2018-7184
UnknownEPSS 8.86%
Last modified
CVE-2018-7184 is a vulnerability of currently unknown severity. ntpd in ntp 4.2.8p4 before 4.2.8p11 drops bad packets before updating the "received" timestamp, which allows remote attackers to cause a denial of service (disruption) by sending a packet with a zero-origin timestamp causing the association to reset and setting the contents of the packet as the most recent timestamp. This issue is a result of an incomplete fix for CVE-2015-7704.. EPSS estimates a 8.86% chance of exploitation in the next 30 days.
Description
ntpd in ntp 4.2.8p4 before 4.2.8p11 drops bad packets before updating the "received" timestamp, which allows remote attackers to cause a denial of service (disruption) by sending a packet with a zero-origin timestamp causing the association to reset and setting the contents of the packet as the most recent timestamp. This issue is a result of an incomplete fix for CVE-2015-7704.
Metrics
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Ntp | Ntp | 4.2.8 | P10 |
| Synology | Router Manager | 1.1 | — |
| Synology | Skynas | All versions | — |
| Synology | Virtual Diskstation Manager | All versions | — |
| Synology | Diskstation Manager | 5.2 | — |
| Synology | Diskstation Manager | 6.0 | — |
| Synology | Diskstation Manager | 6.1 | — |
| Synology | Vs960hd Firmware | All versions | — |
| Slackware | Slackware Linux | 14.0 | — |
| Slackware | Slackware Linux | 14.1 | — |
| Slackware | Slackware Linux | 14.2 | — |
| Canonical | Ubuntu Linux | 14.04 | — |
| Canonical | Ubuntu Linux | 16.04 | — |
| Canonical | Ubuntu Linux | 17.10 | — |
| Canonical | Ubuntu Linux | 18.04 | — |
| Netapp | Cloud Backup | All versions | — |
| Netapp | Steelstore Cloud Integrated Storage | All versions | — |
References
- http://packetstormsecurity.com/files/146631/Slackware-Security-Advisory-ntp-Updates.htmlThird Party Advisory, VDB Entry
- http://support.ntp.org/bin/view/Main/NtpBug3453Third Party Advisory
- http://www.securityfocus.com/archive/1/541824/100/0/threadedThird Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/103192Third Party Advisory, VDB Entry
- https://security.FreeBSD.org/advisories/FreeBSD-SA-18:02.ntp.ascThird Party Advisory
- https://security.gentoo.org/glsa/201805-12Third Party Advisory
- https://security.netapp.com/advisory/ntap-20180626-0001/Third Party Advisory
- https://usn.ubuntu.com/3707-1/Third Party Advisory
- https://www.synology.com/support/security/Synology_SA_18_13Third Party Advisory
- http://packetstormsecurity.com/files/146631/Slackware-Security-Advisory-ntp-Updates.htmlThird Party Advisory, VDB Entry
- http://support.ntp.org/bin/view/Main/NtpBug3453Third Party Advisory
- http://www.securityfocus.com/archive/1/541824/100/0/threadedThird Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/103192Third Party Advisory, VDB Entry
- https://security.FreeBSD.org/advisories/FreeBSD-SA-18:02.ntp.ascThird Party Advisory
- https://security.gentoo.org/glsa/201805-12Third Party Advisory
- https://security.netapp.com/advisory/ntap-20180626-0001/Third Party Advisory
- https://usn.ubuntu.com/3707-1/Third Party Advisory
- https://www.synology.com/support/security/Synology_SA_18_13Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-7184?
ntpd in ntp 4.2.8p4 before 4.2.8p11 drops bad packets before updating the "received" timestamp, which allows remote attackers to cause a denial of service (disruption) by sending a packet with a zero-origin timestamp causing the association to reset and setting the contents of the packet as the most recent timestamp. This issue is a result of an incomplete fix for CVE-2015-7704.
How severe is CVE-2018-7184?
Severity scoring for CVE-2018-7184 is pending analysis. The EPSS model estimates a 8.86% probability of exploitation in the next 30 days.
How do I fix CVE-2018-7184?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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