Out-of-bounds Read in Ntpsec
CVE-2019-6443
An issue was discovered in NTPsec before 1.1.3. Because of a bug in ctl_getitem, there is a stack-based buffer over-read in read_sysvars in ntp_control.c in ntpd.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.
EPSS exploit prediction
EPSS: 0.669 (99.3th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.669 · newest: 0.669 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- dumpco.re/blog/ntpsec-bugs (Exploit, Third Party Advisory)
- dumpco.re/bugs/ntpsec-oobread1 (Exploit, Third Party Advisory)
- github.com/ntpsec/ntpsec/blob/NTPsec_1_1_3/NEWS (Third Party Advisory, Release Notes)
- www.exploit-db.com/exploits/46175/ (Exploit, VDB Entry, Third Party Advisory, exploit)
Frequently asked questions
- What is CVE-2019-6443?
- CVE-2019-6443 is a critical-severity vulnerability in Ntpsec, classified under Out-of-bounds Read. CVSS score: 9.1/10. Published 2019-01-16.
- How severe is CVE-2019-6443?
- Critical severity. CVSS v3 base score is 9.1 out of 10.
- Is CVE-2019-6443 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.