6.2
MEDIUM
CVSS 3.0
CVE-2015-7975
NTP Denial of Service
Description
The nextvar function in NTP before 4.2.8p6 and 4.3.x before 4.3.90 does not properly validate the length of its input, which allows an attacker to cause a denial of service (application crash).
INFO
Published Date :
Jan. 30, 2017, 9:59 p.m.
Last Modified :
April 20, 2025, 1:37 a.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework
for assessing the severity of vulnerabilities in software and systems.
We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | LOW | [email protected] | ||||
| CVSS 3.0 | MEDIUM | [email protected] |
Solution
A vulnerability in NTP allows for a denial of service. Update the affected NTP packages to resolve this issue.
- Update the NTP software to a version that addresses the vulnerability.
- Reboot the system if required by the update process.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2015-7975.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2015-7975 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2015-7975
weaknesses.
CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call
CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities
CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables
CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow
CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow
CAPEC-42: MIME Conversion MIME Conversion
CAPEC-44: Overflow Binary Resource File Overflow Binary Resource File
CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links
CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags
CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion
CAPEC-100: Overflow Buffers Overflow Buffers
CAPEC-123: Buffer Manipulation Buffer Manipulation
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2015-7975 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2015-7975 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00059.html Added Reference http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00060.html Added Reference http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.html Added Reference http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00038.html Added Reference http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.html Added Reference http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html Added Reference http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html Added Reference http://lists.opensuse.org/opensuse-updates/2016-05/msg00114.html Added Reference http://support.ntp.org/bin/view/Main/NtpBug2937 Added Reference http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160127-ntpd Added Reference http://www.securityfocus.com/bid/81959 Added Reference http://www.securitytracker.com/id/1034782 Added Reference http://www.ubuntu.com/usn/USN-3096-1 Added Reference https://bto.bluecoat.com/security-advisory/sa113 Added Reference https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03750en_us Added Reference https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03766en_us Added Reference https://security.FreeBSD.org/advisories/FreeBSD-SA-16:09.ntp.asc Added Reference https://security.gentoo.org/glsa/201607-15 Added Reference https://security.netapp.com/advisory/ntap-20171031-0001/ Added Reference https://www.kb.cert.org/vuls/id/718152 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 21, 2017
Action Type Old Value New Value Added Reference https://security.FreeBSD.org/advisories/FreeBSD-SA-16:09.ntp.asc [No Types Assigned] -
CVE Modified by [email protected]
Nov. 10, 2017
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20171031-0001/ [No Types Assigned] -
CVE Modified by [email protected]
Jul. 22, 2017
Action Type Old Value New Value Added Reference https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03766en_us [No Types Assigned] -
CVE Modified by [email protected]
May. 27, 2017
Action Type Old Value New Value Added Reference https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03750en_us [No Types Assigned] -
Initial Analysis by [email protected]
Feb. 07, 2017
Action Type Old Value New Value Added CVSS V2 (AV:L/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3 AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html Third Party Advisory Changed Reference Type https://bto.bluecoat.com/security-advisory/sa113 No Types Assigned https://bto.bluecoat.com/security-advisory/sa113 Third Party Advisory Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.html Third Party Advisory Changed Reference Type http://www.securitytracker.com/id/1034782 No Types Assigned http://www.securitytracker.com/id/1034782 Third Party Advisory, VDB Entry Changed Reference Type http://www.securityfocus.com/bid/81959 No Types Assigned http://www.securityfocus.com/bid/81959 Third Party Advisory, VDB Entry Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00038.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00038.html Third Party Advisory Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00059.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00059.html Third Party Advisory Changed Reference Type https://security.gentoo.org/glsa/201607-15 No Types Assigned https://security.gentoo.org/glsa/201607-15 Third Party Advisory Changed Reference Type http://www.ubuntu.com/usn/USN-3096-1 No Types Assigned http://www.ubuntu.com/usn/USN-3096-1 Third Party Advisory Changed Reference Type http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160127-ntpd No Types Assigned http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160127-ntpd Third Party Advisory Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html Third Party Advisory Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00060.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00060.html Third Party Advisory Changed Reference Type http://lists.opensuse.org/opensuse-updates/2016-05/msg00114.html No Types Assigned http://lists.opensuse.org/opensuse-updates/2016-05/msg00114.html Third Party Advisory Changed Reference Type https://www.kb.cert.org/vuls/id/718152 No Types Assigned https://www.kb.cert.org/vuls/id/718152 Third Party Advisory, US Government Resource Changed Reference Type http://support.ntp.org/bin/view/Main/NtpBug2937 No Types Assigned http://support.ntp.org/bin/view/Main/NtpBug2937 Vendor Advisory Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.html Third Party Advisory Added CWE CWE-119 Added CPE Configuration OR *cpe:2.3:a:ntp:ntp:4.2.8:p5:*:*:*:*:*:* (and previous) *cpe:2.3:a:ntp:ntp:4.3.0:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.1:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.10:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.11:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.12:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.13:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.14:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.15:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.16:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.17:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.18:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.19:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.2:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.20:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.21:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.22:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.23:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.24:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.25:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.26:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.27:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.28:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.29:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.3:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.30:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.31:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.32:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.33:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.34:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.35:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.36:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.37:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.38:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.39:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.4:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.40:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.41:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.42:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.43:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.44:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.45:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.46:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.47:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.48:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.49:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.5:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.50:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.51:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.52:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.53:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.54:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.55:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.56:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.57:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.58:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.59:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.6:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.60:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.61:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.62:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.63:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.64:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.65:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.66:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.67:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.68:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.69:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.7:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.70:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.71:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.72:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.73:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.74:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.75:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.76:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.77:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.78:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.79:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.8:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.80:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.81:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.82:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.83:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.84:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.85:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.86:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.87:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.88:*:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.3.89:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity
being observed over the next 30 days. Following chart shows the EPSS
score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 6.2
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Base CVSS Score: 2.1
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.46 }} -0.16%
score
0.63352
percentile