ntp 4.2.8 Trusted Key input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in ntp 4.2.8. This vulnerability affects unknown code of the component Trusted Key Handler. This manipulation causes input validation. This vulnerability is tracked as CVE-2016-2517. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in ntp 4.2.8 (Network Management Software). It has been declared as critical. Affected by this vulnerability is some unknown functionality of the component Trusted Key Handler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect availability.

The weakness was disclosed 04/27/2016 by Security Team with Qihoo 360 as confirmed security notice (Website). It is possible to read the advisory at support.ntp.org. This vulnerability is known as CVE-2016-2517 since 02/20/2016. The exploitation appears to be difficult. The attack can be launched remotely. Additional levels of successful authentication are required for exploitation. The technical details are unknown and an exploit is not publicly available.

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 (112745), Tenable (93352) and SecurityFocus (BID 88189†). The entries VDB-78854, VDB-80651, VDB-82981 and VDB-82982 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.4

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

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
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

02/20/2016 🔍
04/26/2016 +65 days 🔍
04/27/2016 +1 days 🔍
04/28/2016 +1 days 🔍
09/06/2016 +130 days 🔍
09/08/2016 +2 days 🔍
01/30/2017 +144 days 🔍
07/27/2022 +2004 days 🔍

Sourcesinfo

Advisory: support.ntp.org
Researcher: Security Team
Organization: Qihoo 360
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-2517 (🔍)
GCVE (CVE): GCVE-0-2016-2517
GCVE (VulDB): GCVE-100-82987

OVAL: 🔍

CERT: 🔍
X-Force: 112745 - NTP trusted key denial of service
SecurityFocus: 88189 - NTP CVE-2016-2517 Denial of Service Vulnerability
SecurityTracker: 1035705

See also: 🔍

Entryinfo

Created: 04/28/2016 10:47
Updated: 07/27/2022 09:47
Changes: 04/28/2016 10:47 (67), 10/29/2018 06:15 (20), 07/27/2022 09:47 (5)
Complete: 🔍
Cache ID: 216::103

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