Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2016-1567

Severity CVSS v4.0:
Pending analysis
Type:
CWE-254 Security Features
Publication date:
26/01/2016
Last modified:
12/04/2025

Description

chrony before 1.31.2 and 2.x before 2.2.1 do not verify peer associations of symmetric keys when authenticating packets, which might allow remote attackers to conduct impersonation attacks via an arbitrary trusted key, aka a "skeleton key."

Impact

Vector 3.x
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 8.10 HIGH
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

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

Base Score 3.x
8.10
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:M/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 6.80 MEDIUM
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

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

Base Score 2.0
6.80
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:tuxfamily:chrony:*:*:*:*:*:*:*:* 1.31.1 (including)
cpe:2.3:a:tuxfamily:chrony:2.0:*:*:*:*:*:*:*
cpe:2.3:a:tuxfamily:chrony:2.1:*:*:*:*:*:*:*
cpe:2.3:a:tuxfamily:chrony:2.1.1:*:*:*:*:*:*:*
cpe:2.3:a:tuxfamily:chrony:2.2:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools