ntp 4.2.8p5 Origin Timestamp input validation

CVSS Meta Temp Score
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CTI Interest Score
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4.7$0-$5k0.00

A vulnerability, which was classified as critical, has been found in ntp 4.2.8p5 (Network Management Software). This issue affects an unknown code of the component Origin Timestamp Handler. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to 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. Impacted is integrity, and availability. The summary by CVE is:

NTP before 4.2.8p6 and 4.3.x before 4.3.90 allows remote attackers to bypass the origin timestamp validation via a packet with an origin timestamp set to zero.

The weakness was released 01/19/2016 with Cisco as confirmed security notice (Website). It is possible to read the advisory at support.ntp.org. The identification of this vulnerability is CVE-2015-8138 since 11/13/2015. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 88054 (Network Time Protocol Daemon (ntpd) 3.x / 4.x < 4.2.8p6 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc. and running in the context r. 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 4.2.8p6 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (110025) and Tenable (88054).

Productinfo

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Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 4.7

VulDB Base Score: 4.8
VulDB Temp Score: 4.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 88054
Nessus Name: Network Time Protocol Daemon (ntpd) 3.x / 4.x < 4.2.8p6 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 900567
OpenVAS Name: Fedora Update for ntp FEDORA-2016-8
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: ntp 4.2.8p6

Timelineinfo

11/13/2015 🔍
01/19/2016 +67 days 🔍
01/19/2016 +0 days 🔍
01/20/2016 +1 days 🔍
01/21/2016 +1 days 🔍
01/25/2016 +4 days 🔍
01/26/2016 +1 days 🔍
01/29/2016 +3 days 🔍
01/30/2017 +367 days 🔍
07/06/2022 +1983 days 🔍

Sourcesinfo

Advisory: USN-3096-1
Organization: Cisco
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-8138 (🔍)
OVAL: 🔍

X-Force: 110025 - NTP timestamp security bypass
SecurityTracker: 1034782
Vulnerability Center: 56276 - NTP <4.2.8p6 Remote Unspecified Vulnerability via Crafted Packet, Medium
SecurityFocus: 81811 - NTP CVE-2015-8138 Denial of Service Vulnerability

Entryinfo

Created: 01/25/2016 13:50
Updated: 07/06/2022 08:56
Changes: 01/25/2016 13:50 (71), 07/22/2018 10:24 (19), 07/06/2022 08:53 (4), 07/06/2022 08:56 (1)
Complete: 🔍
Cache ID: 18:576:103

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