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AUSCERT External Security Bulletin Redistribution
ESB-2022.3162
USN-5496-1: cloud-init vulnerability
30 June 2022
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AusCERT Security Bulletin Summary
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Product: cloud-init
Publisher: Ubuntu
Operating System: Ubuntu
Resolution: Patch/Upgrade
CVE Names: CVE-2022-2084
Original Bulletin:
https://ubuntu.com/security/notices/USN-5496-1
Comment: CVSS (Max): None available when published
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USN-5496-1: cloud-init vulnerability
29 June 2022
cloud-init could be made to expose sensitive information.
Releases
o Ubuntu 22.04 LTS
o Ubuntu 21.10
o Ubuntu 20.04 LTS
o Ubuntu 18.04 LTS
Packages
o cloud-init - initialization and customization tool for cloud instances
Details
Mike Stroyan discovered that cloud-init could log password hashes when
reporting schema failures. An attacker with access to these logs could
potentially use this to gain user credentials.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 22.04
o cloud-init - 22.2-0ubuntu1~22.04.3
Ubuntu 21.10
o cloud-init - 22.2-0ubuntu1~21.10.3
Ubuntu 20.04
o cloud-init - 22.2-0ubuntu1~20.04.3
Ubuntu 18.04
o cloud-init - 22.2-0ubuntu1~18.04.3
In general, a standard system update will make the necessary changes.
Please note that sensitive information may have been logged to remote
logging aggregators as well as to the system journal, and removal of
such information may be required. Similarly, cloud-init configurations
that log in non-default locations may also require the removal of
sensitive information.
References
o CVE-2022-2084
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