CVE-2016-1567 Information

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.\

CVSS Vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

http://chrony.tuxfamily.org/news.html_20_jan_2016_chrony_2_2_1_and_chrony_1_31_2_released http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176559.html http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175969.html http://www.talosintel.com/reports/TALOS-2016-0071/

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.1