CVE-2020-14367
6.0
MEDIUM
CVSS 3.1
EPSS 0.27%
Description
A flaw was found in chrony versions before 3.5.1 when creating the PID file under the /var/run/chrony folder. The file is created during chronyd startup while still running as the root user, and when it's opened for writing, chronyd does not check for an existing symbolic link with the same file name. This flaw allows an attacker with privileged access to create a symlink with the default PID file name pointing to any destination file in the system, resulting in data loss and a denial of service due to the path traversal.
How to fix CVE-2020-14367
To remediate CVE-2020-14367, upgrade the affected package to a fixed version below.
- —upgrade to 3.5.1-r0 or later
- —upgrade to 3.5.1-1 or later
Is CVE-2020-14367 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 3.5.1-r0
- from 0, < 3.5.1-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.0 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H |