GHSA-7452-xqpj-6rpc
moby Access to remapped root allows privilege escalation to real root
En bref
- Publiée
- Mise à jour
- CVE
- CVE-2021-21284
- CVSS_V3
- CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
Description
### Impact 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. ### Patches Versions 20.10.3 and 19.03.15 contain patches that prevent privilege escalation from remapped user. ### Credits Maintainers would like to thank Alex Chapman for discovering the vulnerability; @awprice, @nathanburrell, @raulgomis, @chris-walz, @erin-jensby, @bassmatt, @mark-adams, @dbaxa for working on it and Zac Ellis for responsibly disclosing it to security@docker.com
Paquets affectés
| Paquet | Versions |
|---|---|
| Go · github.com/moby/moby | introduced 0, fixed 19.3.15 |
| Go · github.com/moby/moby | introduced 20.10.0-beta1, fixed 20.10.3 |
Références
- https://github.com/moby/moby/security/advisories/GHSA-7452-xqpj-6rpc WEB
- https://nvd.nist.gov/vuln/detail/CVE-2021-21284 ADVISORY
- https://github.com/moby/moby/commit/64bd4485b3a66a597c02c95f5776395e540b2c7c WEB
- https://docs.docker.com/engine/release-notes/#20103 WEB
- https://github.com/moby/moby/releases/tag/v19.03.15 WEB
- https://github.com/moby/moby/releases/tag/v20.10.3 WEB
- https://security.gentoo.org/glsa/202107-23 WEB
- https://security.netapp.com/advisory/ntap-20210226-0005 WEB
- https://www.debian.org/security/2021/dsa-4865 WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |