Bug 1924742 (CVE-2021-21285) - CVE-2021-21285 docker: daemon crash during image pull of malicious image
Summary: CVE-2021-21285 docker: daemon crash during image pull of malicious image
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2021-21285
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: 1934046 1934047
Blocks: 1924746
TreeView+ depends on / blocked
 
Reported: 2021-02-03 14:37 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-10-28 12:46 UTC (History)
11 users (show)

Fixed In Version: docker 19.03.15, docker 20.10.3
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Doc Text:
A flaw was found in Docker. Pulling an intentionally malformed Docker image manifest could lead to a crash of the `dockerd` daemon, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
Clone Of:
Environment:
Last Closed: 2021-10-28 12:46:27 UTC
Embargoed:

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Description Guilherme de Almeida Suckevicz 2021-02-03 14:37:01 UTC 
In Docker before versions 19.03.15, 20.10.3 there is a vulnerability in which pulling an intentionally malformed Docker image manifest crashes the dockerd daemon. Versions 20.10.3 and 19.03.15 contain patches that prevent the daemon from crashing.
Comment 1 Mauro Matteo Cascella 2021-02-19 14:56:00 UTC 
External References:

https://github.com/moby/moby/security/advisories/GHSA-6fj5-m822-rqx8
Comment 3 Mauro Matteo Cascella 2021-03-03 14:58:36 UTC 
Upstream fix:
https://github.com/moby/moby/commit/a7d4af84bd2f189b921c3ec60796aa825e3a0f2a
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