Bug 2008592 (CVE-2021-41089) - CVE-2021-41089 moby: `docker cp` allows unexpected chmod of host file
Summary: CVE-2021-41089 moby: `docker cp` allows unexpected chmod of host file
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2021-41089
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2009329 2009330 2010238 2010239 2010240 2010241 2012387 2012388 2012389 2012390 2012391 2012392 2012393 2012394 2023965 2023966
Blocks: 2008593
TreeView+ depends on / blocked
 
Reported: 2021-09-28 15:48 UTC by Pedro Sampaio
Modified: 2022-05-02 08:28 UTC (History)
32 users (show)

Fixed In Version: moby 20.10.9
Clone Of:
Environment:
Last Closed: 2021-10-28 09:07:19 UTC
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2022:0735 0 None None None 2022-03-03 06:57:51 UTC

Description Pedro Sampaio 2021-09-28 15:48:58 UTC 
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.

References:

https://github.com/moby/moby/security/advisories/GHSA-v994-f8vw-g7j4
Comment 9 errata-xmlrpc 2022-03-03 06:57:49 UTC 
This issue has been addressed in the following products:

  Red Hat Advanced Cluster Management for Kubernetes 2.4 for RHEL 8

Via RHSA-2022:0735 https://access.redhat.com/errata/RHSA-2022:0735
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