HOME VULNERABILITIESCVE-2018-7184

HIGH

CVE-2018-7184

NVD-CWE-noinfoPublished: March 6, 2018· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official 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.

Technical Analysis

CVE-2018-7184 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

Canonical1 product(s)

ubuntu linux

netapp2 product(s)

cloud backupsteelstore cloud integrated storage

ntp1 product(s)

ntp

slackware1 product(s)

slackware linux

synology5 product(s)

router managerskynasvirtual diskstation managerdiskstation managervs960hd firmware

Source: NVD CPE · 17 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://packetstormsecurity.com/files/146631/Slackware-Security-Advisory-ntp-Updates.html

ADVISORYhttp://support.ntp.org/bin/view/Main/NtpBug3453

ADVISORYhttp://www.securityfocus.com/archive/1/541824/100/0/threaded

ADVISORYhttp://www.securityfocus.com/bid/103192

ADVISORYhttps://security.FreeBSD.org/advisories/FreeBSD-SA-18:02.ntp.asc

ADVISORYhttps://security.gentoo.org/glsa/201805-12

ADVISORYhttps://security.netapp.com/advisory/ntap-20180626-0001/

ADVISORYhttps://usn.ubuntu.com/3707-1/

ADVISORYhttps://www.synology.com/support/security/Synology_SA_18_13

ADVISORYhttp://packetstormsecurity.com/files/146631/Slackware-Security-Advisory-ntp-Updates.html

ADVISORYhttp://support.ntp.org/bin/view/Main/NtpBug3453

ADVISORYhttp://www.securityfocus.com/archive/1/541824/100/0/threaded

ADVISORYhttp://www.securityfocus.com/bid/103192

ADVISORYhttps://security.FreeBSD.org/advisories/FreeBSD-SA-18:02.ntp.asc

ADVISORYhttps://security.gentoo.org/glsa/201805-12

ADVISORYhttps://security.netapp.com/advisory/ntap-20180626-0001/

ADVISORYhttps://usn.ubuntu.com/3707-1/

ADVISORYhttps://www.synology.com/support/security/Synology_SA_18_13

All References (20)

→

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://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_us

→

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

Quick Facts

CVE IDCVE-2018-7184

CVSS Score7.5 / 10

SeverityHIGH

WeaknessNVD-CWE-noinfo

CISA KEVNo

Affected5 vendor(s)

PublishedMar 6, 2018

Related CVEs (NVD-CWE-noinfo)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2018-7184 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

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