HOMEVULNERABILITIESCVE-2018-7182
HIGHPOC

CVE-2018-7182

CWE-125Published: March 6, 2018· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

The ctl_getitem method in ntpd in ntp-4.2.8p6 before 4.2.8p11 allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted mode 6 packet with a ntpd instance from 4.2.8p6 through 4.2.8p10.

NVD Source

Technical Analysis

CVE-2018-7182 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.

A proof-of-concept (PoC) exploit exists for CVE-2018-7182. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

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
netapp1 product(s)
element software
ntp1 product(s)
ntp
Source: NVD CPE · 4 total CPE entries

Exploit & PoC Resources

POC AVAILABLEProof-of-concept code exists
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://security.FreeBSD.org/advisories/FreeBSD-SA-18:02.ntp.asc
PATCHhttps://security.FreeBSD.org/advisories/FreeBSD-SA-18:02.ntp.asc
ADVISORYhttp://packetstormsecurity.com/files/146631/Slackware-Security-Advisory-ntp-Updates.html
ADVISORYhttp://support.ntp.org/bin/view/Main/NtpBug3412
ADVISORYhttp://www.securityfocus.com/archive/1/541824/100/0/threaded
ADVISORYhttp://www.securityfocus.com/bid/103191
ADVISORYhttps://security.gentoo.org/glsa/201805-12
ADVISORYhttps://security.netapp.com/advisory/ntap-20180626-0001/
ADVISORYhttps://usn.ubuntu.com/3707-1/
ADVISORYhttps://www.exploit-db.com/exploits/45846/
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/NtpBug3412
ADVISORYhttp://www.securityfocus.com/archive/1/541824/100/0/threaded
ADVISORYhttp://www.securityfocus.com/bid/103191
ADVISORYhttps://security.gentoo.org/glsa/201805-12
ADVISORYhttps://security.netapp.com/advisory/ntap-20180626-0001/
ADVISORYhttps://usn.ubuntu.com/3707-1/
ADVISORYhttps://www.exploit-db.com/exploits/45846/
ADVISORYhttps://www.synology.com/support/security/Synology_SA_18_13

All References (22)

→
http://packetstormsecurity.com/files/146631/Slackware-Security-Advisory-ntp-Updates.htmlThird Party Advisory · VDB Entry
→
http://support.ntp.org/bin/view/Main/NtpBug3412Mitigation · Vendor Advisory
→
http://www.securityfocus.com/archive/1/541824/100/0/threadedThird Party Advisory · VDB Entry
→
http://www.securityfocus.com/bid/103191Third Party Advisory · VDB Entry
→
https://security.FreeBSD.org/advisories/FreeBSD-SA-18:02.ntp.ascPatch · Third 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.exploit-db.com/exploits/45846/Exploit · Third Party Advisory · VDB Entry
→
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/NtpBug3412Mitigation · Vendor Advisory
→
http://www.securityfocus.com/archive/1/541824/100/0/threadedThird Party Advisory · VDB Entry
→
http://www.securityfocus.com/bid/103191Third Party Advisory · VDB Entry

Quick Facts

CVE IDCVE-2018-7182
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-125
CISA KEVNo
ExploitPOC
Affected3 vendor(s)
PublishedMar 6, 2018

Related CVEs (CWE-125)

CVE-2009-2523
10.0
CVE-2017-14451
10.0
CVE-2013-0767
10.0
CVE-2021-41556
10.0
CVE-2021-21777
10.0
CVE-2026-34987
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-7182 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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