Stack-based Buffer Over-read in NTPsec by NTPsec
CVE-2019-6444

9.1CRITICAL

Key Information:

Vendor

Ntpsec

Status
Ntpsec
Vendor
CVE Published:
16 January 2019

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 45%

What is CVE-2019-6444?

A stack-based buffer over-read vulnerability exists in NTPsec versions prior to 1.1.3. The flaw arises in the process_control() function within ntp_control.c, where attacker-controlled data can be improperly processed by the ntohl() function. This can potentially allow an attacker to exploit the vulnerability to read sensitive data from the stack. Rigorous attention to input validation is essential to mitigate such risks in network time protocol systems.

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-2019-6444 - Proof of Concept

References

https://dumpco.re/bugs/ntpsec-oobread2
x_refsource_MISC
https://dumpco.re/blog/ntpsec-bugs
x_refsource_MISC
https://github.com/ntpsec/ntpsec/blob/NTPsec_1_1_3/NEWS
x_refsource_MISC

EPSS Score

45% 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

.