x/vulndb: potential Go vuln in github.com/moby/moby: CVE-2021-21284 #2316
Labels
excluded: LEGACY_FALSE_POSITIVE
(DO NOT USE) Vulnerability marked as false positive before we introduced the triage process
CVE-2021-21284 references github.com/moby/moby, which may be a Go module.
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.
References:
Cross references:
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