ntp 4.2.8p5 ntpq filename 7pk security

CVSS Meta Temp Score
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability was found in ntp 4.2.8p5. It has been rated as critical. The affected element is an unknown function of the component ntpq. This manipulation of the argument filename causes 7pk security. This vulnerability is tracked as CVE-2015-7976. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in ntp 4.2.8p5 (Network Management Software). It has been declared as critical. Affected by this vulnerability is an unknown function of the component ntpq. The manipulation of the argument filename with an unknown input leads to a 7pk security vulnerability. The CWE definition for the vulnerability is CWE-254. As an impact it is known to affect integrity, and availability. The summary by CVE is:

The ntpq saveconfig command in NTP 4.1.2, 4.2.x before 4.2.8p6, 4.3, 4.3.25, 4.3.70, and 4.3.77 does not properly filter special characters, which allows attackers to cause unspecified impact via a crafted filename.

The weakness was disclosed 01/19/2016 as confirmed security notice (Website). It is possible to read the advisory at support.ntp.org. This vulnerability is known as CVE-2015-7976 since 10/23/2015. The exploitation appears to be easy. The attack can be launched remotely. The successful exploitation requires a single authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1211 according to MITRE ATT&CK.

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 196593 (Ubuntu Security Notification for Ntp Vulnerabilities (USN-3096-1)).

Upgrading to version 4.2.8p6 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (110021), Tenable (88054), SecurityFocus (BID 81961†) and Vulnerability Center (SBV-57052†). The entries VDB-80644, VDB-80645, VDB-80646 and VDB-80648 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.6
VulDB Meta Temp Score: 4.2

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

NVD Base Score: 4.3
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: 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: 864076
OpenVAS Name: NTP.org ntpd Multiple Vulnerabilities
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: ntp 4.2.8p6

Timelineinfo

10/23/2015 🔍
01/18/2016 +87 days 🔍
01/19/2016 +0 days 🔍
01/20/2016 +1 days 🔍
01/20/2016 +0 days 🔍
01/25/2016 +4 days 🔍
03/07/2016 +42 days 🔍
01/30/2017 +328 days 🔍
07/06/2022 +1983 days 🔍

Sourcesinfo

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

CVE: CVE-2015-7976 (🔍)
GCVE (CVE): GCVE-0-2015-7976
GCVE (VulDB): GCVE-100-80647

OVAL: 🔍

X-Force: 110021 - NTP ntpq saveconfig security bypass
SecurityFocus: 81961
SecurityTracker: 1034782
Vulnerability Center: 57052 - [cisco-sa-20160127-ntpd] Cisco Multiple Products Remote DoS and Security Bypass due to an Issue in NTP Server - CVE-2015-7976, High

See also: 🔍

Entryinfo

Created: 01/25/2016 13:49
Updated: 07/06/2022 08:41
Changes: 01/25/2016 13:49 (70), 09/01/2018 08:53 (17), 07/06/2022 08:41 (4)
Complete: 🔍
Cache ID: 216:E7E:103

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