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AUSCERT External Security Bulletin Redistribution
ESB-2021.3714
USN-5134-1: docker.io vulnerability
9 November 2021
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AusCERT Security Bulletin Summary
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Product: docker.io
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2021-41092
Reference: ESB-2021.3550
ESB-2021.3385
Original Bulletin:
https://ubuntu.com/security/notices/USN-5134-1
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USN-5134-1: docker.io vulnerability
09 November 2021
docker.io could be made to expose sensitive information over the
network.
Releases
o Ubuntu 21.10
o Ubuntu 21.04
o Ubuntu 20.04 LTS
o Ubuntu 18.04 LTS
Packages
o docker.io - Linux container runtime
Details
An information disclosure issue was discovered in the command line interface
of docker.io. A misconfigured credential store could result in supplied
credentials being leaked to the public registry, when using the docker login
command with a private registry.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 21.10
o docker.io - 20.10.7-0ubuntu5.1
Ubuntu 21.04
o docker.io - 20.10.7-0ubuntu5~21.04.2
Ubuntu 20.04
o docker.io - 20.10.7-0ubuntu5~20.04.2
Ubuntu 18.04
o docker.io - 20.10.7-0ubuntu5~18.04.3
In general, a standard system update will make all the necessary changes.
References
o CVE-2021-41092
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