National Vulnerability Database

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    Vulnerabilities Detail

CVE-2016-1567 Detail

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."

Source:  MITRE
Description Last Modified:  01/26/2016

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 8.1 HIGH
Vector: AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H (V3 legend)
Impact Score: 5.9
Exploitability Score: 2.2

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

CVSS v2.0 Severity and Metrics:

Base Score: 6.8 MEDIUM
Vector: (AV:N/AC:M/Au:N/C:P/I:P/A:P) (V2 legend)
Impact Subscore: 6.4
Exploitability Subscore: 8.6

Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): Partial
Availability (A): Partial
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://chrony.tuxfamily.org/news.html#_20_jan_2016_chrony_2_2_1_and_chrony_1_31_2_released Vendor Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176559.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175969.html Patch
http://www.talosintel.com/reports/TALOS-2016-0071/ Exploit

Technical Details

Vulnerability Type (View All)

Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-1567
NVD Published Date:
01/26/2016
NVD Last Modified:
12/05/2016