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/<remapping>" that cause writing files with extended privileges. Versions 20.10.3 and 19.03.15 contain patches that prevent privilege escalation from remapped user.
References
Configurations
History
21 Nov 2024, 05:47
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://docs.docker.com/engine/release-notes/#20103 - Release Notes, Vendor Advisory | |
| References | () https://github.com/moby/moby/commit/64bd4485b3a66a597c02c95f5776395e540b2c7c - Patch, Third Party Advisory | |
| References | () https://github.com/moby/moby/releases/tag/v19.03.15 - Release Notes, Third Party Advisory | |
| References | () https://github.com/moby/moby/releases/tag/v20.10.3 - Release Notes, Third Party Advisory | |
| References | () https://github.com/moby/moby/security/advisories/GHSA-7452-xqpj-6rpc - Third Party Advisory | |
| References | () https://security.gentoo.org/glsa/202107-23 - Patch, Third Party Advisory | |
| References | () https://security.netapp.com/advisory/ntap-20210226-0005/ - Third Party Advisory | |
| References | () https://www.debian.org/security/2021/dsa-4865 - Third Party Advisory |
Information
Published : 2021-02-02 18:15
Updated : 2024-11-21 05:47
NVD link : CVE-2021-21284
Mitre link : CVE-2021-21284
CVE.ORG link : CVE-2021-21284
JSON object : View
Products Affected
docker
- docker
debian
- debian_linux
netapp
- e-series_santricity_os_controller
CWE
CWE-22
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')