Detections
Analytics
Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: chrony (UTSA-2025-990681)
medium Nessus Plugin ID 274578
Synopsis
The Unity Linux host is missing one or more security updates.Description
The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-990681 advisory.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.
Tenable has extracted the preceding description block directly from the Unity Linux security advisory.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Update the affected chrony package.See Also
Plugin Details
Severity: Medium
ID: 274578
File Name: unity_linux_UTSA-2025-990681.nasl
Version: 1.1
Type: local
Published: 11/10/2025
Updated: 11/10/2025
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.2
CVSS v2
Risk Factor: Low
Base Score: 3.6
Temporal Score: 2.7
Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:P/A:P
CVSS Score Source: CVE-2020-14367
CVSS v3
Risk Factor: Medium
Base Score: 6
Temporal Score: 5.2
Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/UOS-Server/release, Host/UOS-Server/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 11/10/2025
Vulnerability Publication Date: 8/20/2020
Reference Information
CVE: CVE-2020-14367