A ca-certificates security update has been released for Ubuntu Linux 18.04 LTS, 20.04 LTS and 21.04.
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Ubuntu Security Notice USN-5089-1
September 23, 2021
ca-certificates update
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 21.04
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
Summary:
A certificate about to expire was removed from ca-certificates.
Software Description:
- ca-certificates: Common CA certificates
Details:
The ca-certificates package contained a CA certificate that will expire on
2021-09-30 and will cause connectivity issues. This update removes the
“DST Root CA X3” CA.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 21.04:
ca-certificates 20210119ubuntu0.21.04.1
Ubuntu 20.04 LTS:
ca-certificates 20210119~20.04.2
Ubuntu 18.04 LTS:
ca-certificates 20210119~18.04.2
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5089-1
https://launchpad.net/bugs/1944481
Package Information:
https://launchpad.net/ubuntu/+source/ca-certificates/20210119ubuntu0.21.04.1
https://launchpad.net/ubuntu/+source/ca-certificates/20210119~20.04.2
https://launchpad.net/ubuntu/+source/ca-certificates/20210119~18.04.2
