Home/CVE/ntpd in ntp 4.2.8p4 before 4.2.8p11 drops bad packets before updating the "received" timestamp, which allows remote atta
CVE

CVE-2018-7184

ntpd in ntp 4.2.8p4 before 4.2.8p11 drops bad packets before updating the "received" timestamp, which allows remote atta

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.

HIGH · CVSS 7.5 EPSS 0.13128
Act now
  • EPSS ≥ 0.10 - elevated exploitation probability
  • EPSS percentile: top 6% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
▤

Affected Products & Versions

10
ntpall versions
synology router managerall versions
synology skynasall versions
synology virtual diskstation managerall versions
synology diskstation managerall versions
synology vs960hd firmwareall versions
slackware linuxall versions
canonical ubuntu linuxall versions
⚠

Public Exploits & PoCs

1
pocpacketstormsecurity.com · Slackware-Security-Advisory-ntp-Updates.htmlpacketstormsecurity.com
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.0 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD06 Mar 2018 · 08:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

7
suse-csafopenSUSE-SU-2024:11102-1
suse-csafSUSE-SU-2018:1765-2
usnUSN-3707-1
suse-csafSUSE-SU-2018:1765-1
suse-csafSUSE-SU-2018:1464-1
🔗

References & Sources

9
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://support.ntp.org/bin/view/Main/NtpBug3453Third Party Advisory
http://www.securityfocus.com/archive/1/541824/100/0/threadedThird Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/103192Third Party AdvisoryVDB 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
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