PT-2015-3299 · Ntt+5 · Ntp+6

Martin Prpič · Published 2015-10-21 · Updated 2024-06-15 · CVE-2015-7853

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions NTP versions 4.2.x through 4.2.8p3 NTP versions 4.3.x through 4.3.76

Description The issue is related to the datalen parameter in the refclock driver, which allows remote attackers to execute arbitrary code or cause a denial of service via a negative input value. This is due to a buffer overflow in memory.

Recommendations For NTP versions 4.2.x through 4.2.8p3, update to version 4.2.8p4 or later. For NTP versions 4.3.x through 4.3.76, update to version 4.3.77 or later. As a temporary workaround, consider restricting the use of the datalen parameter in the refclock driver until a patch is available.

Exploit

Fix

RCE

DoS

Buffer Overflow

Weakness Enumeration

CWE-120

CWE-119

Related Identifiers

ALT-PU-2017-2335

BDU:2017-02016

CVE-2015-7853

MGASA-2015-0418

OPENSUSE-SU-2024:10181-1

SUSE-SU-2015:2058-1

SUSE-SU-2016:1247-1

SUSE-SU-2016:1311-1

USN-2783-1

Affected Products

Alt Linux

Cisco Ios Xe

Cisco Nexus

Ibm Aix

Ntp

Suse

Ubuntu

References · 243

• 🔥 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://bdu.fstec.ru/vul/2017-02017 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2516 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-5194 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9310 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2016:1311-1 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2517 · Security Note
• http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151021-ntp · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4954 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4953 · Security Note
• https://osv.dev/vulnerability/CVE-2015-7853 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7703 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7702 · Security Note
• https://ubuntu.com/security/CVE-2015-5195 · Vendor Advisory