Upstream information

CVE-2020-14367 at MITRE

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.

SUSE information

Overall state of this security issue: Running

This issue is currently rated as having moderate severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 3.6
Vector AV:L/AC:L/Au:N/C:N/I:P/A:P
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact Partial
Availability Impact Partial
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 6 6
Vector CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
Access Vector Local Local
Access Complexity Low Low
Privileges Required High High
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact None None
Integrity Impact High High
Availability Impact High High
CVSSv3 Version 3.1 3.1

Note from the SUSE Security Team

This does not affect SUSE Linux Enterprise, the issue was only in newer versions of chrony packaged by SUSE.

SUSE Bugzilla entry: 1174911 [RESOLVED / FIXED]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
HPE Helion Openstack 8
  • chrony >= 4.1-5.9.1
Patchnames:
HPE-Helion-OpenStack-8-2021-4147
Image SLES15-SP3-Azure-Basic
Image SLES15-SP3-Azure-Standard
Image SLES15-SP3-BYOS-Azure
Image SLES15-SP3-BYOS-EC2-HVM
Image SLES15-SP3-BYOS-GCE
Image SLES15-SP3-CHOST-BYOS-Aliyun
Image SLES15-SP3-CHOST-BYOS-Azure
Image SLES15-SP3-CHOST-BYOS-EC2
Image SLES15-SP3-CHOST-BYOS-GCE
Image SLES15-SP3-EC2-ECS-HVM
Image SLES15-SP3-EC2-HVM
Image SLES15-SP3-GCE
Image SLES15-SP3-HPC-Azure
Image SLES15-SP3-HPC-BYOS-Azure
Image SLES15-SP3-HPC-BYOS-EC2-HVM
Image SLES15-SP3-HPC-BYOS-GCE
Image SLES15-SP3-Manager-4-2-Proxy-BYOS-Azure
Image SLES15-SP3-Manager-4-2-Proxy-BYOS-EC2-HVM
Image SLES15-SP3-Manager-4-2-Proxy-BYOS-GCE
Image SLES15-SP3-Manager-4-2-Server-BYOS-Azure
Image SLES15-SP3-Manager-4-2-Server-BYOS-EC2-HVM
Image SLES15-SP3-Manager-4-2-Server-BYOS-GCE
Image SLES15-SP3-Micro-5-1-BYOS-Azure
Image SLES15-SP3-Micro-5-1-BYOS-EC2-HVM
Image SLES15-SP3-Micro-5-1-BYOS-GCE
Image SLES15-SP3-Micro-5-2-BYOS-Azure
Image SLES15-SP3-Micro-5-2-BYOS-EC2-HVM
Image SLES15-SP3-Micro-5-2-BYOS-GCE
Image SLES15-SP3-SAP-Azure
Image SLES15-SP3-SAP-Azure-LI-BYOS-Production
Image SLES15-SP3-SAP-Azure-VLI-BYOS-Production
Image SLES15-SP3-SAP-BYOS-Azure
Image SLES15-SP3-SAP-BYOS-EC2-HVM
Image SLES15-SP3-SAP-BYOS-GCE
Image SLES15-SP3-SAP-EC2-HVM
Image SLES15-SP3-SAP-GCE
Image SLES15-SP3-SAPCAL-Azure
Image SLES15-SP3-SAPCAL-EC2-HVM
Image SLES15-SP3-SAPCAL-GCE
  • chrony >= 4.1-150300.16.3.1
  • chrony-pool-suse >= 4.1-150300.16.3.1
SUSE Linux Enterprise Desktop 15 SP3
SUSE Linux Enterprise High Performance Computing 15 SP3
SUSE Linux Enterprise Module for Basesystem 15 SP3
SUSE Linux Enterprise Server 15 SP3
SUSE Linux Enterprise Server for SAP Applications 15 SP3
SUSE Linux Enterprise Storage 7.1
SUSE Manager Proxy 4.2
SUSE Manager Retail Branch Server 4.2
SUSE Manager Server 4.2
  • chrony >= 4.1-150300.16.3.1
  • chrony-pool-empty >= 4.1-150300.16.3.1
  • chrony-pool-suse >= 4.1-150300.16.3.1
Patchnames:
SUSE-SLE-Module-Basesystem-15-SP3-2022-845
SUSE Linux Enterprise Desktop 15 SP4
SUSE Linux Enterprise High Performance Computing 15 SP4
SUSE Linux Enterprise Module for Basesystem 15 SP4
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server for SAP Applications 15 SP4
SUSE Manager Proxy 4.3
SUSE Manager Retail Branch Server 4.3
SUSE Manager Server 4.3
  • chrony >= 4.1-150400.19.4
  • chrony-pool-empty >= 4.1-150400.19.4
  • chrony-pool-suse >= 4.1-150400.19.4
Patchnames:
SUSE Linux Enterprise Module for Basesystem 15 SP4 GA chrony-4.1-150400.19.4
SUSE Linux Enterprise Micro 5.1
  • chrony >= 4.1-150300.16.3.1
  • chrony-pool-suse >= 4.1-150300.16.3.1
Patchnames:
SUSE-SUSE-MicroOS-5.1-2022-845
SUSE Linux Enterprise Server 12 SP2-BCL
  • chrony >= 4.1-5.9.1
Patchnames:
SUSE-SLE-SERVER-12-SP2-BCL-2021-4147
SUSE Linux Enterprise Server 12 SP3-BCL
  • chrony >= 4.1-5.9.1
Patchnames:
SUSE-SLE-SERVER-12-SP3-BCL-2021-4147
SUSE Linux Enterprise Server 12 SP3-ESPOS
  • chrony >= 4.1-5.9.1
Patchnames:
SUSE-SLE-SERVER-12-SP3-ESPOS-2021-4147
SUSE Linux Enterprise Server 12 SP3-LTSS
  • chrony >= 4.1-5.9.1
Patchnames:
SUSE-SLE-SERVER-12-SP3-2021-4147
SUSE Linux Enterprise Server 12 SP4-ESPOS
  • chrony >= 4.1-5.9.1
Patchnames:
SUSE-SLE-SERVER-12-SP4-ESPOS-2021-4147
SUSE Linux Enterprise Server 12 SP4-LTSS
  • chrony >= 4.1-5.9.1
Patchnames:
SUSE-SLE-SERVER-12-SP4-LTSS-2021-4147
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server for SAP Applications 12 SP5
  • chrony >= 4.1-5.9.1
Patchnames:
SUSE-SLE-SERVER-12-SP5-2021-4147
SUSE Linux Enterprise Server for SAP Applications 12 SP3
  • chrony >= 4.1-5.9.1
Patchnames:
SUSE-SLE-SAP-12-SP3-2021-4147
SUSE Linux Enterprise Server for SAP Applications 12 SP4
  • chrony >= 4.1-5.9.1
Patchnames:
SUSE-SLE-SAP-12-SP4-2021-4147
SUSE OpenStack Cloud 8
  • chrony >= 4.1-5.9.1
Patchnames:
SUSE-OpenStack-Cloud-8-2021-4147
SUSE OpenStack Cloud 9
  • chrony >= 4.1-5.9.1
Patchnames:
SUSE-OpenStack-Cloud-9-2021-4147
SUSE OpenStack Cloud Crowbar 8
  • chrony >= 4.1-5.9.1
Patchnames:
SUSE-OpenStack-Cloud-Crowbar-8-2021-4147
SUSE OpenStack Cloud Crowbar 9
  • chrony >= 4.1-5.9.1
Patchnames:
SUSE-OpenStack-Cloud-Crowbar-9-2021-4147
openSUSE Leap 15.3
  • chrony >= 4.1-150300.16.3.1
  • chrony-pool-empty >= 4.1-150300.16.3.1
  • chrony-pool-openSUSE >= 4.1-150300.16.3.1
  • chrony-pool-suse >= 4.1-150300.16.3.1
Patchnames:
openSUSE-SLE-15.3-2022-845
openSUSE Leap 15.4
  • chrony >= 4.1-150400.19.4
  • chrony-pool-openSUSE >= 4.1-150400.19.4
Patchnames:
openSUSE Leap 15.4 GA chrony-4.1-150400.19.4
openSUSE Tumbleweed
  • chrony >= 4.1-5.2
  • chrony-pool-empty >= 4.1-5.2
  • chrony-pool-openSUSE >= 4.1-5.2
  • chrony-pool-suse >= 4.1-5.2
Patchnames:
openSUSE Tumbleweed GA chrony-4.1-5.2


First public cloud image revisions this CVE is fixed in:


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.

Product(s) Source package State
HPE Helion OpenStack 8 chrony Released
SLES15-EC2-CHOST-HVM-BYOS chrony In progress
SLES15-SP1-CHOST-BYOS-Ali chrony In progress
SLES15-SP1-CHOST-BYOS-Azure chrony In progress
SLES15-SP1-CHOST-BYOS-EC2 chrony In progress
SLES15-SP1-CHOST-BYOS-GCE chrony In progress
SLES15-SP1-CHOST-BYOS-OpenStack chrony In progress
SLES15-SP2-CHOST-BYOS-Aliyun chrony In progress
SLES15-SP2-CHOST-BYOS-Azure chrony In progress
SLES15-SP2-CHOST-BYOS-EC2 chrony In progress
SLES15-SP2-CHOST-BYOS-GCE chrony In progress
SLES15-SP2-CHOST-BYOS-OpenStack chrony In progress
SLES15-SP3-CHOST-BYOS-Aliyun chrony Released
SLES15-SP3-CHOST-BYOS-Azure chrony Released
SLES15-SP3-CHOST-BYOS-EC2 chrony Released
SLES15-SP3-CHOST-BYOS-GCE chrony Released
SLES15-SP4-CHOST-BYOS-Aliyun chrony In progress
SLES15-SP4-CHOST-BYOS-Azure chrony In progress
SLES15-SP4-CHOST-BYOS-EC2 chrony In progress
SLES15-SP4-CHOST-BYOS-GCE chrony In progress
SUSE CaaS Platform 4.0 chrony In progress
SUSE CaaS Platform 4.5 chrony In progress
SUSE Enterprise Storage 6 chrony In progress
SUSE Enterprise Storage 7 chrony In progress
SUSE Linux Enterprise Desktop 15 SP1 chrony Not affected
SUSE Linux Enterprise Desktop 15 SP2 chrony In progress
SUSE Linux Enterprise Desktop 15 SP3 chrony Released
SUSE Linux Enterprise Desktop 15 SP4 chrony Released
SUSE Linux Enterprise High Performance Computing 12 SP4 chrony Not affected
SUSE Linux Enterprise High Performance Computing 12 SP5 chrony Released
SUSE Linux Enterprise High Performance Computing 15 LTSS chrony In progress
SUSE Linux Enterprise High Performance Computing 15 SP1 chrony Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1 ESPOS chrony In progress
SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS chrony In progress
SUSE Linux Enterprise High Performance Computing 15 SP2 chrony In progress
SUSE Linux Enterprise High Performance Computing 15 SP2 ESPOS chrony In progress
SUSE Linux Enterprise High Performance Computing 15 SP2 LTSS chrony In progress
SUSE Linux Enterprise High Performance Computing 15 SP3 chrony Released
SUSE Linux Enterprise High Performance Computing 15 SP4 chrony Released
SUSE Linux Enterprise Micro 5.0 chrony In progress
SUSE Linux Enterprise Micro 5.1 chrony Released
SUSE Linux Enterprise Micro 5.2 chrony In progress
SUSE Linux Enterprise Module for Basesystem 15 SP1 chrony Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP2 chrony In progress
SUSE Linux Enterprise Module for Basesystem 15 SP3 chrony Released
SUSE Linux Enterprise Module for Basesystem 15 SP4 chrony Released
SUSE Linux Enterprise Server 12 SP2 BCL chrony Released
SUSE Linux Enterprise Server 12 SP2 LTSS chrony Not affected
SUSE Linux Enterprise Server 12 SP3 BCL chrony Released
SUSE Linux Enterprise Server 12 SP3 ESPOS chrony Released
SUSE Linux Enterprise Server 12 SP3 LTSS chrony Released
SUSE Linux Enterprise Server 12 SP4 chrony Not affected
SUSE Linux Enterprise Server 12 SP4 ESPOS chrony Released
SUSE Linux Enterprise Server 12 SP4 LTSS chrony Released
SUSE Linux Enterprise Server 12 SP5 chrony Released
SUSE Linux Enterprise Server 15 ESPOS chrony In progress
SUSE Linux Enterprise Server 15 LTSS chrony In progress
SUSE Linux Enterprise Server 15 SP1 chrony Not affected
SUSE Linux Enterprise Server 15 SP1 LTSS chrony In progress
SUSE Linux Enterprise Server 15 SP2 chrony In progress
SUSE Linux Enterprise Server 15 SP2 LTSS chrony In progress
SUSE Linux Enterprise Server 15 SP3 chrony Released
SUSE Linux Enterprise Server 15 SP4 chrony Released
SUSE Linux Enterprise Server Business Critical Linux 15 SP1 chrony In progress
SUSE Linux Enterprise Server Business Critical Linux 15 SP2 chrony In progress
SUSE Linux Enterprise Server for SAP Applications 12 SP2 chrony Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP3 chrony Released
SUSE Linux Enterprise Server for SAP Applications 12 SP4 chrony Released
SUSE Linux Enterprise Server for SAP Applications 12 SP5 chrony Released
SUSE Linux Enterprise Server for SAP Applications 15 chrony In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP1 chrony Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 chrony In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP3 chrony Released
SUSE Linux Enterprise Server for SAP Applications 15 SP4 chrony Released
SUSE Linux Enterprise Storage 6 chrony Not affected
SUSE Linux Enterprise Storage 7 chrony In progress
SUSE Linux Enterprise Storage 7.1 chrony Released
SUSE Manager Proxy 4.0 chrony Not affected
SUSE Manager Proxy 4.1 chrony In progress
SUSE Manager Proxy 4.2 chrony Released
SUSE Manager Proxy 4.3 chrony Released
SUSE Manager Retail Branch Server 4.0 chrony Not affected
SUSE Manager Retail Branch Server 4.1 chrony In progress
SUSE Manager Retail Branch Server 4.2 chrony Released
SUSE Manager Retail Branch Server 4.3 chrony Released
SUSE Manager Server 4.0 chrony Not affected
SUSE Manager Server 4.1 chrony In progress
SUSE Manager Server 4.2 chrony Released
SUSE Manager Server 4.3 chrony Released
SUSE OpenStack Cloud 8 chrony Released
SUSE OpenStack Cloud 9 chrony Released
SUSE OpenStack Cloud Crowbar 8 chrony Released
SUSE OpenStack Cloud Crowbar 9 chrony Released