Description

Directory traversal vulnerability in the save_config function in ntpd in ntp_control.c in NTP before 4.2.8p4, when used on systems that do not use '\' or '/' characters for directory separation such as OpenVMS, allows remote authenticated users to overwrite arbitrary files.

INFO

Published Date :

Jan. 28, 2020, 5:15 p.m.

Last Modified :

Nov. 21, 2024, 2:37 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2015-7851 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Ntp ntp
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-2015-7851.

URL Resource
http://support.ntp.org/bin/view/Main/NtpBug2918 Vendor Advisory
http://support.ntp.org/bin/view/Main/SecurityNotice Release Notes Vendor Advisory
http://www.talosintel.com/reports/TALOS-2015-0062/ Exploit Third Party Advisory
http://support.ntp.org/bin/view/Main/NtpBug2918 Vendor Advisory
http://support.ntp.org/bin/view/Main/SecurityNotice Release Notes Vendor Advisory
http://www.talosintel.com/reports/TALOS-2015-0062/ Exploit Third Party Advisory

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-2015-7851 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2015-7851 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://support.ntp.org/bin/view/Main/NtpBug2918
    Added Reference http://support.ntp.org/bin/view/Main/SecurityNotice
    Added Reference http://www.talosintel.com/reports/TALOS-2015-0062/
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Reanalysis by [email protected]

    Jun. 18, 2020

    Action Type Old Value New Value
    Removed CVSS V2 NIST (AV:N/AC:L/Au:S/C:N/I:P/A:P)
    Added CVSS V2 NIST (AV:N/AC:M/Au:S/C:N/I:P/A:N)
    Changed Reference Type http://support.ntp.org/bin/view/Main/SecurityNotice Vendor Advisory http://support.ntp.org/bin/view/Main/SecurityNotice Release Notes, Vendor Advisory
    Changed CPE Configuration OR *cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:* versions up to (including) 4.2.8 *cpe:2.3:a:ntp:ntp:4.2.8:p1:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p1-beta1:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p1-beta2:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p1-beta3:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p1-beta4:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p1-beta5:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p1-rc1:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p1-rc2:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p10:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p11:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p12:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p13:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p2:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p2-rc1:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p2-rc2:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p2-rc3:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p3:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p3-rc1:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p3-rc2:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p3-rc3:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:* versions from (including) 4.3.0 up to (excluding) 4.3.77 OR *cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:* versions from (including) 4.2.0 up to (excluding) 4.2.8 *cpe:2.3:a:ntp:ntp:4.2.8:p1:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p1-beta1:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p1-beta2:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p1-beta3:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p1-beta4:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p1-beta5:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p1-rc1:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p1-rc2:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p2:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p2-rc1:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p2-rc2:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p2-rc3:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p3:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p3-rc1:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p3-rc2:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p3-rc3:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:* versions from (including) 4.3.0 up to (excluding) 4.3.77
  • CPE Deprecation Remap by [email protected]

    May. 28, 2020

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:ntp:ntp:4.2.8:p3_rc3:*:*:*:*:*:* OR *cpe:2.3:a:ntp:ntp:4.2.8:p3-rc3:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 28, 2020

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:ntp:ntp:4.2.8:p3_rc2:*:*:*:*:*:* OR *cpe:2.3:a:ntp:ntp:4.2.8:p3-rc2:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 28, 2020

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:ntp:ntp:4.2.8:p3_rc1:*:*:*:*:*:* OR *cpe:2.3:a:ntp:ntp:4.2.8:p3-rc1:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 28, 2020

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:ntp:ntp:4.2.8:p2_rc3:*:*:*:*:*:* OR *cpe:2.3:a:ntp:ntp:4.2.8:p2-rc3:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 28, 2020

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:ntp:ntp:4.2.8:p2_rc2:*:*:*:*:*:* OR *cpe:2.3:a:ntp:ntp:4.2.8:p2-rc2:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 28, 2020

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:ntp:ntp:4.2.8:p2_rc1:*:*:*:*:*:* OR *cpe:2.3:a:ntp:ntp:4.2.8:p2-rc1:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 28, 2020

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:ntp:ntp:4.2.8:p1_rc2:*:*:*:*:*:* OR *cpe:2.3:a:ntp:ntp:4.2.8:p1-rc2:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 28, 2020

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:ntp:ntp:4.2.8:p1_rc1:*:*:*:*:*:* OR *cpe:2.3:a:ntp:ntp:4.2.8:p1-rc1:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 28, 2020

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:ntp:ntp:4.2.8:p1_beta5:*:*:*:*:*:* OR *cpe:2.3:a:ntp:ntp:4.2.8:p1-beta5:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 28, 2020

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:ntp:ntp:4.2.8:p1_beta4:*:*:*:*:*:* OR *cpe:2.3:a:ntp:ntp:4.2.8:p1-beta4:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 28, 2020

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:ntp:ntp:4.2.8:p1_beta3:*:*:*:*:*:* OR *cpe:2.3:a:ntp:ntp:4.2.8:p1-beta3:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 28, 2020

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:ntp:ntp:4.2.8:p1_beta2:*:*:*:*:*:* OR *cpe:2.3:a:ntp:ntp:4.2.8:p1-beta2:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    May. 28, 2020

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:ntp:ntp:4.2.8:p1_beta1:*:*:*:*:*:* OR *cpe:2.3:a:ntp:ntp:4.2.8:p1-beta1:*:*:*:*:*:*
  • Initial Analysis by [email protected]

    Feb. 06, 2020

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:N/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
    Changed Reference Type http://support.ntp.org/bin/view/Main/NtpBug2918 No Types Assigned http://support.ntp.org/bin/view/Main/NtpBug2918 Vendor Advisory
    Changed Reference Type http://support.ntp.org/bin/view/Main/SecurityNotice No Types Assigned http://support.ntp.org/bin/view/Main/SecurityNotice Vendor Advisory
    Changed Reference Type http://www.talosintel.com/reports/TALOS-2015-0062/ No Types Assigned http://www.talosintel.com/reports/TALOS-2015-0062/ Exploit, Third Party Advisory
    Added CWE NIST CWE-22
    Added CPE Configuration OR *cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:* versions up to (including) 4.2.8 *cpe:2.3:a:ntp:ntp:4.2.8:p1:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p1-beta1:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p1-beta2:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p1-beta3:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p1-beta4:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p1-beta5:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p1-rc1:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p1-rc2:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p10:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p11:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p12:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p13:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p1_beta1:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p1_beta2:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p1_beta3:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p1_beta4:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p1_beta5:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p1_rc1:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p1_rc2:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p2:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p2-rc1:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p2-rc2:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p2-rc3:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p2_rc1:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p2_rc2:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p2_rc3:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p3:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p3-rc1:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p3-rc2:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p3-rc3:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p3_rc1:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p3_rc2:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:4.2.8:p3_rc3:*:*:*:*:*:* *cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:* versions from (including) 4.3.0 up to (excluding) 4.3.77
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.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2015-7851 is associated with the following CWEs:

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.30 }} 0.12%

score

0.69371

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability