ntpd up to 4.2.8p5/4.3.78 ntp_crypto.c -g 7pk time and state

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.0	$0-$5k	0.00

Summaryinfo

A vulnerability was found in ntpd up to 4.2.8p5/4.3.78 and classified as critical. Affected by this vulnerability is an unknown functionality of the file ntp_crypto.c. The manipulation of the argument -g results in 7pk time and state. This vulnerability is identified as CVE-2015-5300. The attack can be executed remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in ntpd up to 4.2.8p5/4.3.78 (Network Management Software). It has been classified as critical. Affected is an unknown code of the file ntp_crypto.c. The manipulation of the argument -g with an unknown input leads to a 7pk time and state vulnerability. CWE is classifying the issue as CWE-361. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was released 10/26/2015 by Aanchal Malhotra, Isaac E. Cohen and Sharon Goldberg with Boston University as confirmed advisory (Website). The advisory is shared for download at support.ntp.org. This vulnerability is traded as CVE-2015-5300 since 07/01/2015. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 86638 (Amazon Linux AMI : ntp (ALAS-2015-607)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Amazon Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 157189 (Oracle Enterprise Linux Security Update for ntp (ELSA-2016-0780)).

Upgrading to version 4.2.8p4 eliminates this vulnerability. A possible mitigation has been published 1 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (107594), Tenable (86638), SecurityFocus (BID 77312†), SecurityTracker (ID 1034670†) and Vulnerability Center (SBV-54015†). Further details are available at bugzilla.redhat.com. Entries connected to this vulnerability are available at VDB-78844, VDB-78847, VDB-78854 and VDB-78937. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Network Management Software

Name

• ntpd

Version

• 4.2.8p5
• 4.3.0
• 4.3.1
• 4.3.2
• 4.3.3
• 4.3.4
• 4.3.5
• 4.3.6
• 4.3.7
• 4.3.8
• 4.3.9
• 4.3.10
• 4.3.11
• 4.3.12
• 4.3.13
• 4.3.14
• 4.3.15
• 4.3.16
• 4.3.17
• 4.3.18
• 4.3.19
• 4.3.20
• 4.3.21
• 4.3.22
• 4.3.23
• 4.3.24
• 4.3.25
• 4.3.26
• 4.3.27
• 4.3.28
• 4.3.29
• 4.3.30
• 4.3.31
• 4.3.32
• 4.3.33
• 4.3.34
• 4.3.35
• 4.3.36
• 4.3.37
• 4.3.38
• 4.3.39
• 4.3.40
• 4.3.41
• 4.3.42
• 4.3.43
• 4.3.44
• 4.3.45
• 4.3.46
• 4.3.47
• 4.3.48
• 4.3.49
• 4.3.50
• 4.3.51
• 4.3.52
• 4.3.53
• 4.3.54
• 4.3.55
• 4.3.56
• 4.3.57
• 4.3.58
• 4.3.59
• 4.3.60
• 4.3.61
• 4.3.62
• 4.3.63
• 4.3.64
• 4.3.65
• 4.3.66
• 4.3.67
• 4.3.68
• 4.3.69
• 4.3.70
• 4.3.71
• 4.3.72
• 4.3.73
• 4.3.74
• 4.3.75
• 4.3.76
• 4.3.77
• 4.3.78

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.7
VulDB Meta Temp Score: 8.0

VulDB Base Score: 9.8
VulDB Temp Score: 8.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: 7pk time and state
CWE: CWE-361
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 86638
Nessus Name: Amazon Linux AMI : ntp (ALAS-2015-607)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 14611
OpenVAS Name: Amazon Linux Local Check: alas-2015-607
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: ntpd 4.2.8p4

Timelineinfo

07/01/2015 🔍
10/21/2015 +112 days 🔍
10/22/2015 +1 days 🔍
10/26/2015 +4 days 🔍
10/27/2015 +1 days 🔍
10/28/2015 +1 days 🔍
10/29/2015 +1 days 🔍
10/29/2015 +0 days 🔍
01/14/2016 +77 days 🔍
07/21/2017 +554 days 🔍
06/25/2022 +1800 days 🔍

Sourcesinfo

Advisory: RHSA-2015:1930
Researcher: Aanchal Malhotra, Isaac E. Cohen, Sharon Goldberg
Organization: Boston University
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-5300 (🔍)
GCVE (CVE): GCVE-0-2015-5300
GCVE (VulDB): GCVE-100-78936

OVAL: 🔍

X-Force: 107594 - Network Time Protocol security bypass
SecurityFocus: 77312 - Network Time Protocol CVE-2015-5300 Man in the Middle Security Bypass Vulnerability
SecurityTracker: 1034670
Vulnerability Center: 54015 - NTP before 4.2.8p4 Remote Unspecified Vulnerability due to Incorrect Implemention of the -g Option - CVE-2015-5300, High

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 10/29/2015 09:42
Updated: 06/25/2022 12:29
Changes: 10/29/2015 09:42 (67), 06/26/2018 08:47 (22), 06/25/2022 12:15 (3), 06/25/2022 12:22 (12), 06/25/2022 12:29 (1)
Complete: 🔍
Cache ID: 216::103

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