PT-2017-4151 · Ntt+6 · Ntp+6

Published 2017-03-27 · Updated 2024-06-15 · CVE-2017-6463

Positive Technologies (AI Summary)

CVSS v2.0

6.8

Medium

Base vector

AV:N/AC:L/Au:S/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions NTP versions prior to 4.2.8p10 NTP versions 4.3.x prior to 4.3.94

Description The issue exists due to insufficient input validation in the unpeer option of the NTP protocol implementation. It allows a remote attacker to cause a denial of service, specifically a daemon crash, by providing an invalid value in the :config directive.

Recommendations For NTP versions prior to 4.2.8p10, update to version 4.2.8p10 or later. For NTP versions 4.3.x prior to 4.3.94, update to version 4.3.94 or later. As a temporary workaround, consider restricting access to the :config directive to minimize the risk of exploitation.

Fix

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

ALT-PU-2017-2335

BDU:2021-04147

CESA-2017_3071

CESA-2018_0855

CVE-2017-6463

MGASA-2017-0134

OPENSUSE-SU-2024:11102-1

RHSA-2017:3071

RHSA-2017_3071

RHSA-2018:0855

RHSA-2018_0855

SUSE-SU-2017:1047-1

SUSE-SU-2017:1048-1

SUSE-SU-2017:1052-1

USN-3349-1

USN-3707-2

Affected Products

Alt Linux

Centos

Freebsd

Ntp

Red Hat

Suse

Ubuntu

References · 69

• https://osv.dev/vulnerability/SUSE-SU-2017:1048-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3349-1 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2017:3071 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-6462 · Vendor Advisory
• http://support.ntp.org/bin/view/Main/NtpBug3387 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2017-6463 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2017-6463 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-2519 · Vendor Advisory
• http://support.ntp.org/bin/view/Main/SecurityNotice#March_2017_ntp_4_2_8p10_NTP_Secu · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2017:1047-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-7429 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-6460 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-7428 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-9310 · Vendor Advisory
• https://usn.ubuntu.com/3707-2 · Vendor Advisory