Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2018-7170

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
06/03/2018
Last modified:
14/01/2025

Description

ntpd in ntp 4.2.x before 4.2.8p7 and 4.3.x before 4.3.92 allows authenticated users that know the private symmetric key to create arbitrarily-many ephemeral associations in order to win the clock selection of ntpd and modify a victim's clock via a Sybil attack. This issue exists because of an incomplete fix for CVE-2016-1549.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N CVSS v3.1 Severity and Metrics:

Base Score: 5.30 MEDIUM
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): High
Availability (A): None

Base Score 3.x
5.30
Severity 3.x
MEDIUM
Vector 2.0
AV:N/AC:M/Au:S/C:N/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 3.50 LOW
Vector: AV:N/AC:M/Au:S/C:N/I:P/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): Single
Confidentiality (C): None
Integrity (I): Physical
Availability (A): None

Base Score 2.0
3.50
Severity 2.0
LOW

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:* 4.2.0 (including) 4.2.8 (excluding)
cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:* 4.3.0 (including) 4.3.92 (excluding)
cpe:2.3:a:ntp:ntp: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:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools