Moby vulnerability relating to supplementary group permissions (moby moby)
At a glance
- Source
- NVD
- EPSS
- EPSS 1.04 % · percentile 64 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- GitHub_M
- NVD status
- Modified
Description
Moby is an open-source project created by Docker to enable software containerization. A bug was found in Moby (Docker Engine) where supplementary groups are not set up properly. If an attacker has direct access to a container and manipulates their supplementary group access, they may be able to use supplementary group access to bypass primary group restrictions in some cases, potentially gaining access to sensitive information or gaining the ability to execute code in that container. This bug is fixed in Moby (Docker Engine) 20.10.18. Running containers should be stopped and restarted for the permissions to be fixed. For users unable to upgrade, this problem can be worked around by not using the `"USER $USERNAME"` Dockerfile instruction. Instead by calling `ENTRYPOINT ["su", "-", "user"]` the supplementary groups will be set up properly.
Weaknesses (CWE)
- CWE-863 — Incorrect Authorization
References
- https://github.com/moby/moby/security/advisories/GHSA-rc4r-wh2q-q6c4
- https://github.com/moby/moby/commit/de7af816e76a7fd3fbf06bffa6832959289fba32
- https://github.com/moby/moby/releases/tag/v20.10.18
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/O7JL2QA3RB732MLJ3RMUXB3IB7AA22YU
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RQQ4E3JBXVR3VK5FIZVJ3QS2TAOOXXTQ
- https://www.benthamsgaze.org/2022/08/22/vulnerability-in-linux-containers-investigation-and-mitigation
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RQQ4E3JBXVR3VK5FIZVJ3QS2TAOOXXTQ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/O7JL2QA3RB732MLJ3RMUXB3IB7AA22YU/
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.3 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L | GitHub_M |
| CVSS 3.1 | MEDIUM 5.3 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L | NVD · security-advisories@github.com (Secondary) |
| CVSS 3.1 | MEDIUM 6.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L | NVD · nvd@nist.gov (Primary) |
Advisories
- GHSA-rc4r-wh2q-q6c4 — Docker supplementary group permissions not set up properly, allowing attackers to bypass primary group restrictions
- GO-2022-0985 — Docker supplementary group permissions not set up properly, allowing attackers to bypass primary group restrictions in github.com/docker/docker
European references
- ENISA EUVD · EUVD-2022-6933
- GCVE · GCVE-0-2022-36109
CERT-FR advisories
- CERTFR-2026-AVI-0199 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0622 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:mobyproject:moby:*:*:*:*:*:*:*:*< 20.10.18cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| moby · moby | affected < 20.10.18 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |