vulnerability
Debian: CVE-2021-21284: docker.io -- security update
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 3 | (AV:A/AC:L/Au:S/C:N/I:P/A:N) | Feb 2, 2021 | Mar 1, 2021 | Mar 2, 2021 |
Severity
3
CVSS
(AV:A/AC:L/Au:S/C:N/I:P/A:N)
Published
Feb 2, 2021
Added
Mar 1, 2021
Modified
Mar 2, 2021
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/" that cause writing files with extended privileges. Versions 20.10.3 and 19.03.15 contain patches that prevent privilege escalation from remapped user.
Solution
debian-upgrade-docker-io
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