*** Bug 1803704 has been marked as a duplicate of this bug. ***

Using below steps to verify this bug:
$ cat scripts/check_secret_expiry.sh
FILE="$1"
if [ ! -f "$1" ]; then
  echo "must provide \$1" && exit 0
fi
export IFS=$'\n'
for i in `cat "$FILE"`
do
  if `echo "$i" | grep "^#" > /dev/null`; then
    continue
  fi
  NS=`echo $i | cut -d ' ' -f 1`
  SECRET=`echo $i | cut -d ' ' -f 2`
  rm -f tls.crt; oc extract secret/$SECRET -n $NS --confirm > /dev/null
  echo "Check cert dates of $SECRET in project $NS:"
  openssl x509 -noout --dates -in tls.crt; echo
done

$ cat certs.txt
openshift-kube-controller-manager-operator csr-signer-signer
openshift-kube-controller-manager-operator csr-signer
openshift-kube-controller-manager kube-controller-manager-client-cert-key
openshift-kube-apiserver-operator aggregator-client-signer
openshift-kube-apiserver aggregator-client
openshift-kube-apiserver external-loadbalancer-serving-certkey
openshift-kube-apiserver internal-loadbalancer-serving-certkey
openshift-kube-apiserver service-network-serving-certkey
openshift-config-managed kube-controller-manager-client-cert-key
openshift-config-managed kube-scheduler-client-cert-key
openshift-kube-scheduler kube-scheduler-client-cert-key

Checking the Certs,  they are with one day expiry times, this is as expected.

$ bash ./check-secret-expiry.sh cert.txt
Check cert dates of csr-signer-signer in project openshift-kube-controller-manager-operator:
notBefore=Feb 27 02:54:14 2020 GMT
notAfter=Feb 28 02:54:14 2020 GMT
...

After one day, checking the cert rotation again, 

$ ./check-secret-expiry.sh ./cert.txt 
Check cert dates of csr-signer-signer in project openshift-kube-controller-manager-operator:
notBefore=Feb 27 22:06:13 2020 GMT
notAfter=Apr 27 22:06:14 2020 GMT

Check cert dates of csr-signer in project openshift-kube-controller-manager-operator:
notBefore=Feb 27 22:09:43 2020 GMT
notAfter=Mar 28 22:09:44 2020 GMT
...

All certs are as expected expiry time 30 days, except cert of of csr-signer-signer in project openshift-kube-controller-manager-operator with 2 * 30 days, see above , is this as expected?

@deads2k : Any comments?
CC @xxia

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2020:0581