Stack-Based Buffer Over-Read in NTPsec Before Version 1.1.3
CVE-2019-6443

9.1CRITICAL

Key Information:

Vendor

Ntpsec

Status
Ntpsec
Vendor
CVE Published:
16 January 2019

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 66%

What is CVE-2019-6443?

An issue was discovered in NTPsec versions prior to 1.1.3, where a bug in the ctl_getitem function leads to a stack-based buffer over-read in the read_sysvars function. This vulnerability occurs within ntp_control.c file in the ntpd process, potentially exposing sensitive information that may be exploited by an attacker.

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2019-6443 - Proof of Concept

References

https://dumpco.re/blog/ntpsec-bugs
x_refsource_MISC
https://dumpco.re/bugs/ntpsec-oobread1
x_refsource_MISC
https://github.com/ntpsec/ntpsec/blob/NTPsec_1_1_3/NEWS
x_refsource_MISC

EPSS Score

66% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.