Public bug reported:
The AddTrust_External_Root.crt certificate has expired:
Data:
Version: 3 (0x2)
Serial Number: 1 (0x1)
Signature Algorithm: sha1WithRSAEncryption
Issuer: C=SE, O=AddTrust AB, OU=AddTrust External TTP Network,
CN=AddTrust External CA Root
Validity
Not Before: May 30 10:48:38 2000 GMT
Not After : May 30 10:48:38 2020 GMT
Subject: C=SE, O=AddTrust AB, OU=AddTrust External TTP Network,
CN=AddTrust External CA Root
Subject Public Key Info:
Public Key Algorithm: rsaEncryption
Public-Key: (2048 bit)
Modulus:
This causes various client-side errors on Ubuntu 16.04 machines, about SSL
certificate expiration, using (lib)curl for instance. Ubuntu 18.04 and up seem
OK.
Removing 'mozilla/AddTrust_External_Root.crt' from /etc/ca-
certificates.conf and running 'update-ca-certificates -f -v' helps. I'm
not sure if removing it is universally the best solution, but I can't
find any other bug reports about this on Launchpad, and this seems the
quickest way to fix all clients.
** Affects: ca-certificates (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1881533
Title:
Remove expired AddTrust_External_Root.crt because it breaks software
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