ntp 4.2.8 IPv4 Bogon Packet 7pk security

CVSS Meta Temp Score
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CTI Interest Score
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5.6$0-$5k0.00

Summaryinfo

A vulnerability was found in ntp 4.2.8. It has been rated as critical. Affected by this issue is some unknown functionality of the component IPv4 Bogon Packet Handler. The manipulation leads to 7pk security. This vulnerability is referenced as CVE-2016-1551. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in ntp 4.2.8 (Network Management Software) and classified as critical. This issue affects an unknown function of the component IPv4 Bogon Packet Handler. The manipulation with an unknown input leads to a 7pk security vulnerability. Using CWE to declare the problem leads to CWE-254. Impacted is integrity, and availability.

The weakness was published 04/27/2016 as confirmed security notice (Website). The advisory is shared at support.ntp.org. The identification of this vulnerability is CVE-2016-1551 since 01/07/2016. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1211 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 93352 (AIX 7.2 TL 0 : ntp (IV87939) (deprecated)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family AIX Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 316362 (Cisco UCS 6200 Series Fabric Interconnects Multiple Vulnerabilities in Network Time Protocol Daemon (CSCuz44156)).

Upgrading to version 4.2.8p7 eliminates this vulnerability. A possible mitigation has been published 5 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (112743), Tenable (93352) and SecurityFocus (BID 88219†). Similar entries are available at VDB-75125, VDB-76044, VDB-78854 and VDB-80651. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 5.6

VulDB Base Score: 8.6
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 3.7
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: 7pk security
CWE: CWE-254
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 93352
Nessus Name: AIX 7.2 TL 0 : ntp (IV87939) (deprecated)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 862576
OpenVAS Name: SuSE Update for ntp SUSE-SU-2016:1568-1 (ntp)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: ntp 4.2.8p7

Timelineinfo

01/07/2016 🔍
04/26/2016 +109 days 🔍
04/27/2016 +1 days 🔍
04/28/2016 +1 days 🔍
09/06/2016 +130 days 🔍
09/08/2016 +2 days 🔍
01/27/2017 +141 days 🔍
05/15/2026 +3394 days 🔍

Sourcesinfo

Advisory: support.ntp.org
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-1551 (🔍)
GCVE (CVE): GCVE-0-2016-1551
GCVE (VulDB): GCVE-100-82985

OVAL: 🔍

CERT: 🔍
X-Force: 112743 - NTP IPv4 bogon packets security bypass
SecurityFocus: 88219 - NTP CVE-2016-1551 Remote Security Vulnerability
SecurityTracker: 1035705

See also: 🔍

Entryinfo

Created: 04/28/2016 10:47
Updated: 05/15/2026 00:52
Changes: 04/28/2016 10:47 (67), 10/29/2018 06:15 (18), 07/27/2022 09:41 (4), 07/27/2022 09:42 (1), 05/15/2026 00:52 (15)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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