Out of Bounds Write Vulnerability in NTPsec Affecting Multiple Versions
CVE-2019-6442

6.5MEDIUM

Key Information:

Vendor

Ntpsec

Status
Ntpsec
Vendor
CVE Published:
16 January 2019

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 13%

What is CVE-2019-6442?

An issue was identified in NTPsec prior to version 1.1.3, where an authenticated attacker could exploit a malformed configuration request to write one byte out of bounds in the ntpd service. This vulnerability arises from weaknesses in the config_remotely function in ntp_config.c, as well as flaws in both the parsing and error-handling mechanisms in ntp_parser.tab.c and ntp_parser.y. Addressing this vulnerability is crucial for maintaining the integrity and security of systems utilizing NTPsec.

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-2019-6442 - Proof of Concept

References

https://www.exploit-db.com/exploits/46178/
exploitx_refsource_EXPLOIT-DB
https://dumpco.re/bugs/ntpsec-authed-oobwrite
x_refsource_MISC
https://dumpco.re/blog/ntpsec-bugs
x_refsource_MISC

EPSS Score

13% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.