`docker cp` allows unexpected chmod of host files (moby moby)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.29 % · percentile 22 ()
- 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 attempting to copy files using `docker cp` into a specially-crafted container can result in Unix file permission changes for existing files in the host’s filesystem, widening access to others. This bug does not directly allow files to be read, modified, or executed without an additional cooperating process. This bug has been fixed in Moby (Docker Engine) 20.10.9. Users should update to this version as soon as possible. Running containers do not need to be restarted.
Weaknesses (CWE)
- CWE-281 — Improper Preservation of Permissions
References
- https://github.com/moby/moby/security/advisories/GHSA-v994-f8vw-g7j4
- https://github.com/moby/moby/commit/bce32e5c93be4caf1a592582155b9cb837fc129a
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZNFADTCHHYWVM6W4NJ6CB4FNFM2VMBIB/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B5Q6G6I4W5COQE25QMC7FJY3I3PAYFBB/
- https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | LOW 2.8 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N | GitHub_M |
| CVSS 3.1 | LOW 2.8 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N | NVD · security-advisories@github.com (Secondary) |
| CVSS 3.1 | MEDIUM 6.3 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | MEDIUM 4.4 | AV:L/AC:M/Au:N/C:P/I:P/A:P | NVD · nvd@nist.gov (Primary) |
Advisories
- GHSA-v994-f8vw-g7j4 — `docker cp` allows unexpected chmod of host files in Moby Docker Engine
- GO-2024-2913 — Unexpected chmod of host files via 'docker cp' in Moby Docker Engine in github.com/docker/docker
European references
- ENISA EUVD · EUVD-2024-2176
- GCVE · GCVE-0-2021-41089
CERT-FR advisories
- CERTFR-2026-AVI-0199 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2022-AVI-547 — Multiples vulnérabilités dans les produits Siemens · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:mobyproject:moby:*:*:*:*:*:*:*:*< 20.10.9cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| moby · moby | affected < 20.10.9 |
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 |