CVE-2019-6444 — An issue was discovered in NTPsec before 1

An issue was discovered in NTPsec before 1.1.3. process_control() in ntp_control.c has a stack-based buffer over-read because attacker-controlled data is dereferenced by ntohl() in ntpd.

01What is this vulnerability?

An issue was discovered in NTPsec before 1.1.3. process_control() in ntp_control.c has a stack-based buffer over-read because attacker-controlled data is dereferenced by ntohl() in ntpd.

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: 2019-01-16T05:00:00.000Z
• Last modified: 2024-08-04T20:23:20.997Z

09References

• dumpco.re — https://dumpco.re/bugs/ntpsec-oobread2
• dumpco.re — https://dumpco.re/blog/ntpsec-bugs
• github.com — https://github.com/ntpsec/ntpsec/blob/NTPsec_1_1_3/NEWS
• www.exploit-db.com — https://www.exploit-db.com/exploits/46176/