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CVE-2021-41089

`docker cp` allows unexpected chmod of host files

Published: Oct 4, 2021Updated: Nov 21, 2024 Sources: CVE List NVD GHSA BDU csafCWE-281
2.8LOW
NVD MITRE
EPSS Score
0.3%
Top 81.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Moby is an open-source project created by Docker to enable software containerization. A bug was found in Moby (Docker Engine) where attempting to copy files using `docker cp` into a specially-crafted container can result in Unix file permission changes for existing files in the host’s filesystem, widening access to others. This bug does not directly allow files to be read, modified, or executed without an additional cooperating process. This bug has been fixed in Moby (Docker Engine) 20.10.9. Users should update to this version as soon as possible. Running containers do not need to be restarted.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:HPR:LUI:NS:CC:LI:NA:N
Exploitability
AV:LAttack Vector
Local
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-281

Affected Products

mobyproject
oss-projectaka docker moby
mobyOn-prem
Cloud & SaaS / container-orchestration
fedoraproject
oss-project·USaka fedora project
fedoraOn-premOS
Operating Systems / linux-distro
moby
oss-projectaka docker moby
mobyOn-prem
Cloud & SaaS / container-orchestration
Go
package-ecosystem
github.com/docker/docker
OSS Libraries
Сообщество свободного программного обеспечения
oss-projectaka fsf
Debian GNU/LinuxOn-premOS
Operating Systems / linux-distro
ООО «РусБИТех-Астра»
commercial·RUaka rusbitech-astra
Astra Linux Special EditionOn-premOS
Operating Systems / linux-distro
and 2 more affected products View all →

Exploitability

Official Patch Available
Scannable·OpenVAS
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Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf
cert-portal.siemens.com
https://github.com/moby/moby/commit/bce32e5c93be4caf1a592582155b9cb837fc129a
github.com
https://github.com/moby/moby/security/advisories/GHSA-v994-f8vw-g7j4
github.com
and 37 more references View all →
News mentions
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