CVE-2021-21284
Published Feb 2, 2021
Last updated 3 years ago
Overview
- Description
- 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.
- Source
- security-advisories@github.com
- NVD status
- Analyzed
Social media
- Hype score
- Not currently trending
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 6.8
- Impact score
- 4
- Exploitability score
- 2.3
- Vector string
- CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
- Severity
- MEDIUM
CVSS 2.0
- Type
- Primary
- Base score
- 2.7
- Impact score
- 2.9
- Exploitability score
- 5.1
- Vector string
- AV:A/AC:L/Au:S/C:N/I:P/A:N
Configurations
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