PT-2016-7328 · Ntf+5 · Ntp+5

Magnus Klaaborg Stubman + 1 · Published 2015-07-21 · Updated 2024-06-15 · CVE-2016-7434

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions NTP versions prior to 4.2.8p9

Description The issue allows remote attackers to cause a denial of service (crash) via a crafted mrulist query. Multiple vulnerabilities could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition or modify the time being advertised by a device acting as a Network Time Protocol (NTP) server. These vulnerabilities include Network Time Protocol Trap Service Denial of Service, Network Time Protocol Broadcast Mode Denial of Service, Network Time Protocol Insufficient Resource Pool Denial of Service, Network Time Protocol Configuration Modification Denial of Service, Network Time Protocol mrulist Query Requests Denial of Service, Network Time Protocol Multiple Binds to the Same Port, and Network Time Protocol Rate Limiting Denial of Service.

Recommendations For NTP versions prior to 4.2.8p9, update to version 4.2.8p9 or later to resolve the issue. As a temporary workaround, consider restricting access to the read mru list function until a patch is available. Additionally, workarounds that address one or more of these vulnerabilities may be available and are documented in the Cisco bug for each affected product.

Exploit

Fix

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

ALT-PU-2017-2335

ALT-PU-2018-1361

CESA-2015_1459

CESA-2015_1930

CESA-2015_2231

CESA-2016_0063

CESA-2016_0780

CESA-2016_1141

CESA-2016_2583

CESA-2017_0252

CESA-2017_3071

CESA-2018_0855

CVE-2016-7434

OPENSUSE-SU-2024:10181-1

RHSA-2015_1459

RHSA-2015_1930

RHSA-2015_2231

RHSA-2016_0063

RHSA-2016_0780

RHSA-2016_1141

RHSA-2016_2583

RHSA-2017_0252

RHSA-2017_3071

RHSA-2018_0855

SUSE-SU-2016:3193-1

SUSE-SU-2016:3195-1

SUSE-SU-2016:3196-1

SUSE-SU-2016_3193-1

SUSE-SU-2016_3195-1

SUSE-SU-2016_3196-1

SUSE-SU-2017:0255-1

SUSE-SU-2017_0255-1

USN-3349-1

Affected Products

Alt Linux

Cisco Nexus

Freebsd

Ntp

Suse

Ubuntu

References · 125

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/ntp/ntp_nak_to_the_future.rb · Exploit
• 🔥 https://github.com/opsxcq/exploit-CVE-2016-7434 · Exploit
• 🔥 https://exploit-db.com/exploits/40806 · Exploit
• https://security.freebsd.org/advisories/FreeBSD-SA-16:39.ntp.asc · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2016:3196-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2016-7434 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-9310 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2016-7434 · Security Note
• https://ubuntu.com/security/CVE-2016-7428 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2017:0255-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-7434 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-6462 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-6458 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2016-7434 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2016-7434 · Vendor Advisory