CVE-2021-21284
medium
CVSS v3
—
CVSS v2
—
VIR risk
5.5
Description
moby Access to remapped root allows privilege escalation to real root
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2021-21284.html
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-21284
Vendor advisory: arch — https://security.archlinux.org/ASA-202102-12
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 1:20.10.3-1 | |
| debian | bookworm | fixed | 20.10.3+dfsg1-1 |
| debian | bullseye | fixed | 20.10.3+dfsg1-1 |
| debian | forky | fixed | 20.10.3+dfsg1-1 |
| debian | sid | fixed | 20.10.3+dfsg1-1 |
| debian | trixie | fixed | 20.10.3+dfsg1-1 |
| sles | affected | |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Go | github.com/moby/moby | <19.3.15 | 19.3.15 |
| Go | github.com/moby/moby | >=20.10.0-beta1,<20.10.3 | 20.10.3 |
References
- https://security.archlinux.org/ASA-202102-12
- https://security-tracker.debian.org/tracker/CVE-2021-21284
- https://www.suse.com/security/cve/CVE-2021-21284.html
- https://github.com/moby/moby/security/advisories/GHSA-7452-xqpj-6rpc
- https://nvd.nist.gov/vuln/detail/CVE-2021-21284
- https://github.com/moby/moby/commit/64bd4485b3a66a597c02c95f5776395e540b2c7c
- https://docs.docker.com/engine/release-notes/#20103
- https://github.com/moby/moby/releases/tag/v19.03.15
- https://github.com/moby/moby/releases/tag/v20.10.3
- https://security.gentoo.org/glsa/202107-23
- https://security.netapp.com/advisory/ntap-20210226-0005
- https://www.debian.org/security/2021/dsa-4865
Verify integrity in audit chain (admin only). AS-IS.