CVE-2018-7182 — The ctl_getitem method in ntpd in ntp-4

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.

01What is this vulnerability?

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.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2018-03-06T20:00:00.000Z
• Last modified: 2024-08-05T06:24:10.330Z

09References

• packetstormsecurity.com — http://packetstormsecurity.com/files/146631/Slackware-Security-Advisory-ntp-Upda…
• security.gentoo.org — https://security.gentoo.org/glsa/201805-12
• security.FreeBSD.org — https://security.FreeBSD.org/advisories/FreeBSD-SA-18:02.ntp.asc
• security.netapp.com — https://security.netapp.com/advisory/ntap-20180626-0001/
• www.securityfocus.com — http://www.securityfocus.com/archive/1/541824/100/0/threaded
• support.ntp.org — http://support.ntp.org/bin/view/Main/NtpBug3412
• usn.ubuntu.com — https://usn.ubuntu.com/3707-1/
• www.exploit-db.com — https://www.exploit-db.com/exploits/45846/
• www.synology.com — https://www.synology.com/support/security/Synology_SA_18_13
• www.securityfocus.com — http://www.securityfocus.com/bid/103191
• support.hpe.com — https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpe…