Configure Python Docker Integrations to Trust Custom Certificates

Configure the custom certificates.
Create a certificates PEM file that includes all of the required custom certificates.
To examine the certificate chain used by a specific endpoint, run the following command on the server machine (requires openssl client):
openssl s_client -servername
<host_name>
-host
<host_name>
-port 443 -showcerts < /dev/null
For example,
openssl s_client -servername api.github.com -host api.github.com -port 443 -showcerts < /dev/null
This prints certificate information including the PEM representation of the certificates. After examining the output, if you see
Verification error: unable to get issuer certificate
, one or more certificates in the certificate chain is not available and you need to obtain these certificates from your IT administrator.
To save the certificates to a
certs.pem
file run the following command:
openssl s_client -servername api.github.com -host api.github.com -port 443 -showcerts < /dev/null 2>/dev/null | sed -n '/^-----BEGIN CERT/,/^-----END CERT/p' > certs.pem
To verify that the
certs.pem
has all needed certificates as part of the certificate chain, run the following command:
openssl verify certs.pem
After saving the
certs.pem
file, add its content to
/var/lib/demisto/python-ssl-certs.pem
, by running the following command:
cat certs.pem >> /var/lib/demisto/python-ssl-certs.pem
(
RedHat/CentOS only
) Set the required SELinux permissions.
By default, when SELinux is in enforcing mode, directories under
/var/lib/
cannot be accessed by docker containers. To allow containers access to the
/var/lib/demisto/python-ssl-certs.pem
file, you need to set the correct SELinux policy type, by typing the following command:
chcon -t svirt_sandbox_file_t /var/lib/demisto/python-ssl-certs.pem
(
Optional
) Verify that the file has the
container_file_t SELinux
type attached by running the following command:
ls -d -Z /var/lib/demisto/python-ssl-certs.pem
(
Optional
) If you require the standard set of certificates trusted by browsers, you can append the CA certificates provided by your operating system. For example, on Ubuntu, these certificates are located at the following path:
/etc/ssl/certs/ca-certificates.crt
. Alternatively, you can download the PEM certificates file provided by the Certifi Project and add your custom certificates to the file that contains the standard set of certificates.
This example adds the
proxy-ca.pem
file (custom certificate) to the
cacert.pem
file (standard certificates):
cat proxy-ca.pem >> cacert.pem
Copy the certificates PEM file to the following path:
/var/lib/demisto/python-ssl-certs.pem
(
Multi-tenant
) In a multi-tenant deployment, the certificate is copied to the following path on the host machine:
/var/lib/demisto/tenants/acc_
TENANT
/python-ssl-certs.pem
Configure the Cortex XSOAR server settings.
Go to
Settings
About
Troubleshooting
.
In the
Server Configuration
section click
Add Server Configuration
.
Key:
python.docker.use_custom_certs
Value:
true
(
Multi-tenant
) In a multi-tenant deployment, the server configuration must be added to each tenant.
Save the server configuration.
Restart the Cortex XSOAR server to verify that all existing Docker images are relaunched.
(Optional)
Add the certificate files to engines.
Configure each engine to use the
/var/lib/demisto/python-ssl-certs.pem
file.
Ensure that you have the following directory on the engine host.
/var/lib/demisto
Set the demisto user as the directory owner with 0700 permissions.
Copy the
python-ssl-certs.pem
file to the
/var/lib/demisto directory
.
Add the following configuration to either the engine configuration file (UI) or to the
d1.conf
file.
"python.docker.use_custom_certs": true
Restart the engine.
Verify that the configuration was added successfully.
If you are using an SSL inspection proxy (MiTM) and want to verify that the certificates are properly set, you can run the following command, which will fetch from www.google.com using HTTPS, and print the headers of the response:
!py script="import requests; print(requests.get('https://google.com').headers)"
.

certs_file = os.environ.get('SSL_CERT_FILE')
if certs_file:
			# perform custom logic to trust certificates...