Upstream information

CVE-2021-21284 at MITRE

Description

In Docker before versions 9.03.15, 20.10.3 there is a vulnerability involving the --userns-remap option in which access to remapped root allows privilege escalation to real root. When using "--userns-remap", if the root user in the remapped namespace has access to the host filesystem they can modify files under "/var/lib/docker/" that cause writing files with extended privileges. Versions 20.10.3 and 19.03.15 contain patches that prevent privilege escalation from remapped user.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having low severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 2.7
Vector AV:A/AC:L/Au:S/C:N/I:P/A:N
Access Vector Adjacent Network
Access Complexity Low
Authentication Single
Confidentiality Impact None
Integrity Impact Partial
Availability Impact None
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 6.8 2.5
Vector CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:N
Access Vector Adjacent Network Local
Access Complexity Low High
Privileges Required Low High
User Interaction None None
Scope Changed Changed
Confidentiality Impact None None
Integrity Impact High Low
Availability Impact None None
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1181732 [NEW]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
Image SLES15-EC2-CHOST-HVM-BYOS
  • containerd >= 1.3.9-5.29.3
  • docker >= 19.03.15_ce-6.43.3
  • docker-libnetwork >= 0.7.0.1+gitr2908_55e924b8a842-4.28.3
  • docker-runc >= 1.0.0rc10+gitr3981_dc9208a3303f-6.45.3
Image SLES15-SP1-CHOST-BYOS-Azure
Image SLES15-SP1-CHOST-BYOS-EC2
Image SLES15-SP1-CHOST-BYOS-GCE
Image SLES15-SP2-CHOST-BYOS-Aliyun
Image SLES15-SP2-CHOST-BYOS-Azure
Image SLES15-SP2-CHOST-BYOS-EC2
Image SLES15-SP2-CHOST-BYOS-GCE
  • containerd >= 1.3.9-5.29.3
  • containerd-ctr >= 1.3.9-5.29.3
  • docker >= 19.03.15_ce-6.43.3
  • docker-libnetwork >= 0.7.0.1+gitr2908_55e924b8a842-4.28.3
  • docker-runc >= 1.0.0rc10+gitr3981_dc9208a3303f-6.45.3
SUSE CaaS Platform 4.0
  • containerd >= 1.3.9-5.29.3
  • docker >= 19.03.15_ce-6.43.3
  • docker-bash-completion >= 19.03.15_ce-6.43.3
  • docker-libnetwork >= 0.7.0.1+gitr2908_55e924b8a842-4.28.3
  • docker-runc >= 1.0.0rc10+gitr3981_dc9208a3303f-6.45.3
Patchnames:
SUSE-SUSE-CAASP-4.0-2021-435
SUSE Enterprise Storage 6
  • containerd >= 1.3.9-5.29.3
  • docker >= 19.03.15_ce-6.43.3
  • docker-bash-completion >= 19.03.15_ce-6.43.3
  • docker-libnetwork >= 0.7.0.1+gitr2908_55e924b8a842-4.28.3
  • docker-runc >= 1.0.0rc10+gitr3981_dc9208a3303f-6.45.3
Patchnames:
SUSE-Storage-6-2021-435
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS
  • containerd >= 1.3.9-5.29.3
  • docker >= 19.03.15_ce-6.43.3
  • docker-bash-completion >= 19.03.15_ce-6.43.3
  • docker-libnetwork >= 0.7.0.1+gitr2908_55e924b8a842-4.28.3
  • docker-runc >= 1.0.0rc10+gitr3981_dc9208a3303f-6.45.3
Patchnames:
SUSE-SLE-Product-HPC-15-SP1-ESPOS-2021-435
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS
  • containerd >= 1.3.9-5.29.3
  • docker >= 19.03.15_ce-6.43.3
  • docker-bash-completion >= 19.03.15_ce-6.43.3
  • docker-libnetwork >= 0.7.0.1+gitr2908_55e924b8a842-4.28.3
  • docker-runc >= 1.0.0rc10+gitr3981_dc9208a3303f-6.45.3
Patchnames:
SUSE-SLE-Product-HPC-15-SP1-LTSS-2021-435
SUSE Linux Enterprise Module for Containers 12
  • containerd >= 1.4.4-16.38.1
  • docker >= 20.10.6_ce-98.66.1
  • docker-libnetwork >= 0.7.0.1+gitr2908_55e924b8a842-37.1
  • docker-runc >= 1.0.0rc10+gitr3981_dc9208a3303f-1.52.1
  • runc >= 1.0.0~rc93-16.8.1
Patchnames:
SUSE-SLE-Module-Containers-12-2021-1458
SUSE-SLE-Module-Containers-12-2021-445
SUSE Linux Enterprise Module for Containers 15 SP2
  • containerd >= 1.3.9-5.29.3
  • docker >= 19.03.15_ce-6.43.3
  • docker-bash-completion >= 19.03.15_ce-6.43.3
  • docker-libnetwork >= 0.7.0.1+gitr2908_55e924b8a842-4.28.3
  • docker-runc >= 1.0.0rc10+gitr3981_dc9208a3303f-6.45.3
Patchnames:
SUSE-SLE-Module-Containers-15-SP2-2021-435
SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP2
  • containerd-ctr >= 1.3.9-5.29.3
  • containerd-kubic >= 1.3.9-5.29.3
  • containerd-kubic-ctr >= 1.3.9-5.29.3
  • docker-kubic >= 19.03.15_ce-6.43.3
  • docker-kubic-bash-completion >= 19.03.15_ce-6.43.3
  • docker-kubic-kubeadm-criconfig >= 19.03.15_ce-6.43.3
  • docker-kubic-test >= 19.03.15_ce-6.43.3
  • docker-kubic-zsh-completion >= 19.03.15_ce-6.43.3
  • docker-libnetwork-kubic >= 0.7.0.1+gitr2908_55e924b8a842-4.28.3
  • docker-runc-kubic >= 1.0.0rc10+gitr3981_dc9208a3303f-6.45.3
  • docker-test >= 19.03.15_ce-6.43.3
  • docker-zsh-completion >= 19.03.15_ce-6.43.3
  • golang-github-docker-libnetwork >= 0.7.0.1+gitr2908_55e924b8a842-4.28.3
  • golang-github-docker-libnetwork-kubic >= 0.7.0.1+gitr2908_55e924b8a842-4.28.3
Patchnames:
SUSE-SLE-Module-Development-Tools-OBS-15-SP2-2021-435
SUSE Linux Enterprise Server 15 SP1-BCL
  • containerd >= 1.3.9-5.29.3
  • docker >= 19.03.15_ce-6.43.3
  • docker-bash-completion >= 19.03.15_ce-6.43.3
  • docker-libnetwork >= 0.7.0.1+gitr2908_55e924b8a842-4.28.3
  • docker-runc >= 1.0.0rc10+gitr3981_dc9208a3303f-6.45.3
Patchnames:
SUSE-SLE-Product-SLES-15-SP1-BCL-2021-435
SUSE Linux Enterprise Server 15 SP1-LTSS
  • containerd >= 1.3.9-5.29.3
  • docker >= 19.03.15_ce-6.43.3
  • docker-bash-completion >= 19.03.15_ce-6.43.3
  • docker-libnetwork >= 0.7.0.1+gitr2908_55e924b8a842-4.28.3
  • docker-runc >= 1.0.0rc10+gitr3981_dc9208a3303f-6.45.3
Patchnames:
SUSE-SLE-Product-SLES-15-SP1-LTSS-2021-435
SUSE Linux Enterprise Server for SAP Applications 15 SP1
  • containerd >= 1.3.9-5.29.3
  • docker >= 19.03.15_ce-6.43.3
  • docker-bash-completion >= 19.03.15_ce-6.43.3
  • docker-libnetwork >= 0.7.0.1+gitr2908_55e924b8a842-4.28.3
  • docker-runc >= 1.0.0rc10+gitr3981_dc9208a3303f-6.45.3
Patchnames:
SUSE-SLE-Product-SLES_SAP-15-SP1-2021-435
SUSE Manager Proxy 4.0
  • containerd >= 1.3.9-5.29.3
  • docker >= 19.03.15_ce-6.43.3
  • docker-bash-completion >= 19.03.15_ce-6.43.3
  • docker-libnetwork >= 0.7.0.1+gitr2908_55e924b8a842-4.28.3
  • docker-runc >= 1.0.0rc10+gitr3981_dc9208a3303f-6.45.3
Patchnames:
SUSE-SLE-Product-SUSE-Manager-Proxy-4.0-2021-435
SUSE Manager Retail Branch Server 4.0
  • containerd >= 1.3.9-5.29.3
  • docker >= 19.03.15_ce-6.43.3
  • docker-bash-completion >= 19.03.15_ce-6.43.3
  • docker-libnetwork >= 0.7.0.1+gitr2908_55e924b8a842-4.28.3
  • docker-runc >= 1.0.0rc10+gitr3981_dc9208a3303f-6.45.3
Patchnames:
SUSE-SLE-Product-SUSE-Manager-Retail-Branch-Server-4.0-2021-435
SUSE Manager Server 4.0
  • containerd >= 1.3.9-5.29.3
  • docker >= 19.03.15_ce-6.43.3
  • docker-bash-completion >= 19.03.15_ce-6.43.3
  • docker-libnetwork >= 0.7.0.1+gitr2908_55e924b8a842-4.28.3
  • docker-runc >= 1.0.0rc10+gitr3981_dc9208a3303f-6.45.3
Patchnames:
SUSE-SLE-Product-SUSE-Manager-Server-4.0-2021-435
openSUSE Leap 15.2
  • containerd >= 1.3.9-lp152.2.3.1
  • containerd-ctr >= 1.3.9-lp152.2.3.1
  • docker >= 19.03.15_ce-lp152.2.3.1
  • docker-bash-completion >= 19.03.15_ce-lp152.2.3.1
  • docker-debuginfo >= 19.03.15_ce-lp152.2.3.1
  • docker-fish-completion >= 19.03.15_ce-lp152.2.3.1
  • docker-libnetwork >= 0.7.0.1+gitr2908_55e924b8a842-lp152.2.3.1
  • docker-libnetwork-debuginfo >= 0.7.0.1+gitr2908_55e924b8a842-lp152.2.3.1
  • docker-runc >= 1.0.0rc10+gitr3981_dc9208a3303f-lp152.2.3.1
  • docker-runc-debuginfo >= 1.0.0rc10+gitr3981_dc9208a3303f-lp152.2.3.1
  • docker-test >= 19.03.15_ce-lp152.2.3.1
  • docker-test-debuginfo >= 19.03.15_ce-lp152.2.3.1
  • docker-zsh-completion >= 19.03.15_ce-lp152.2.3.1
  • fish >= 2.7.1-lp152.5.3.1
  • fish-debuginfo >= 2.7.1-lp152.5.3.1
  • fish-debugsource >= 2.7.1-lp152.5.3.1
  • fish-devel >= 2.7.1-lp152.5.3.1
  • golang-github-docker-libnetwork >= 0.7.0.1+gitr2908_55e924b8a842-lp152.2.3.1
Patchnames:
openSUSE-2021-278


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
SUSE CaaS Platform 4.0 docker Released
SUSE CaaS Platform 4.0 go1.14 In progress
SUSE CaaS Platform 4.0 go1.15 In progress
SUSE Enterprise Storage 6 docker Released
SUSE Enterprise Storage 6 go1.14 In progress
SUSE Enterprise Storage 6 go1.15 In progress
SUSE Linux Enterprise High Performance Computing 15 LTSS docker In progress
SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS docker Released
SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS go1.14 In progress
SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS go1.15 In progress
SUSE Linux Enterprise Module for Containers 12 docker Released
SUSE Linux Enterprise Module for Containers 15 SP1 docker Released
SUSE Linux Enterprise Module for Containers 15 SP2 docker Released
SUSE Linux Enterprise Module for Development Tools 15 SP1 go1.14 Not affected
SUSE Linux Enterprise Module for Development Tools 15 SP1 go1.15 Not affected
SUSE Linux Enterprise Module for Development Tools 15 SP2 go1.14 In progress
SUSE Linux Enterprise Module for Development Tools 15 SP2 go1.15 In progress
SUSE Linux Enterprise Module for Development Tools 15 SP2 go1.16 In progress
SUSE Linux Enterprise Server 15 LTSS docker In progress
SUSE Linux Enterprise Server 15 SP1 Business Critical Linux docker Released
SUSE Linux Enterprise Server 15 SP1 Business Critical Linux go1.14 In progress
SUSE Linux Enterprise Server 15 SP1 Business Critical Linux go1.15 In progress
SUSE Linux Enterprise Server 15 SP1 LTSS docker Released
SUSE Linux Enterprise Server 15 SP1 LTSS go1.14 In progress
SUSE Linux Enterprise Server 15 SP1 LTSS go1.15 In progress
SUSE Linux Enterprise Server ESPOS 15 docker In progress
SUSE Linux Enterprise Server for SAP Applications 15 docker In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP1 docker Released
SUSE Linux Enterprise Server for SAP Applications 15 SP1 go1.14 In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP1 go1.15 In progress
SUSE Manager Proxy 4.0 docker Released
SUSE Manager Proxy 4.0 go1.14 In progress
SUSE Manager Proxy 4.0 go1.15 In progress
SUSE Manager Retail Branch Server 4.0 docker Released
SUSE Manager Retail Branch Server 4.0 go1.14 In progress
SUSE Manager Retail Branch Server 4.0 go1.15 In progress
SUSE Manager Server 4.0 docker Released
SUSE Manager Server 4.0 go1.14 In progress
SUSE Manager Server 4.0 go1.15 In progress