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.
CPE | Name | Operator | Version |
---|---|---|---|
debian_linux | eq | 10.0 | |
docker | ge | 20.0.0 | |
docker | lt | 20.10.3 | |
docker | lt | 19.03.15 | |
e-series_santricity_os_controller | ge | 11.0.0 | |
e-series_santricity_os_controller | le | 11.60.3 |
docs.docker.com/engine/release-notes/
github.com/moby/moby/commit/64bd4485b3a66a597c02c95f5776395e540b2c7c
github.com/moby/moby/releases/tag/v19.03.15
github.com/moby/moby/releases/tag/v20.10.3
github.com/moby/moby/security/advisories/GHSA-7452-xqpj-6rpc
security.gentoo.org/glsa/202107-23
security.netapp.com/advisory/ntap-20210226-0005/
www.debian.org/security/2021/dsa-4865