CVE-2021-21284
privilege escalation in Moby
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.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:AAttack VectorAdjacent
AC:LAttack ComplexityLow
PR:LPrivileges RequiredLow
UI:NUser InteractionNone
Scope
S:CScopeChanged
Impact
C:NConfidentialityNone
I:HIntegrityHigh
A:NAvailabilityNone
Weaknesses
Affected Products
docker
commercial·US
debian
oss-project·GBaka debian gnu/linux
Сообщество свободного программного обеспечения
oss-projectaka fsf
Docker Inc.
commercial·USaka docker
ООО «РусБИТех-Астра»
commercial·RUaka rusbitech-astra
and 4 more affected products View all →
Exploitability
Official Patch Available
Attack Graph
Products CVE Techniques Tactics
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MITRE ATT&CK
2 techniques Collection
Discovery
References
https://docs.docker.com/engine/release-notes/#20103
docs.docker.com
https://github.com/moby/moby/commit/64bd4485b3a66a597c02c95f5776395e540b2c7c
github.com
https://github.com/moby/moby/releases/tag/v19.03.15
github.com
and 15 more references View all →
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