feat(rds): Add RDS certificate expiration check

[madereddy]

Context

Ensure that the SSL/TLS certificates configured for your Amazon RDS are not expired.

Description

Check RDS certificate validity and inform if the certificate will expire soon. Certificate rotation takes coordination between the application and RDS.

1. RDS Certificates with an expiration greater than 3 months the check will PASS with a severity of informational if greater than 6 months and a severity of low if between 3 and 6 months.
2. RDS Certificates that expires in less than 3 months the check will FAIL with a severity of medium.
3. RDS Certificates that expires in less than a month the check will FAIL with a severity of high.
4. RDS Certificates that are expired the check will FAIL with a severity of critical.

License

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[madereddy]

Competing with #4003 and #4004

Recommended to merge this first as RDS cert rds-ca-2019 will be expiring August 22nd 2024.

[sergargar]

Thanks for the PR @madereddy, I like this check! Please, review my comments 😄

[madereddy]

Not sure why pr-lint-test 3.9 failed. I ran the test several times on my machine and it was successful.

prowler-py3.10) # pytest -n auto -vvv -s -x tests/providers/aws/services/rds/rds_instance_no_public_access
================================================================= test session starts =================================================================
platform linux -- Python 3.10.12, pytest-8.2.0, pluggy-1.5.0 -- /root/.cache/pypoetry/virtualenvs/prowler-_7q4EYpC-py3.10/bin/python
cachedir: .pytest_cache
Using --randomly-seed=2455016802
rootdir: /config/data/prowler
configfile: pyproject.toml
plugins: anyio-4.3.0, dash-2.17.0, cov-5.0.0, env-1.1.3, randomly-3.15.0, xdist-3.6.1
4 workers [5 items]     
scheduling tests via LoadScheduling

tests/providers/aws/services/rds/rds_instance_no_public_access/rds_instance_no_public_access_test.py::Test_rds_instance_no_public_access::test_rds_instance_public_with_public_sg 
tests/providers/aws/services/rds/rds_instance_no_public_access/rds_instance_no_public_access_test.py::Test_rds_instance_no_public_access::test_rds_instance_public_with_filtered_sg 
tests/providers/aws/services/rds/rds_instance_no_public_access/rds_instance_no_public_access_test.py::Test_rds_instance_no_public_access::test_rds_instance_public 
tests/providers/aws/services/rds/rds_instance_no_public_access/rds_instance_no_public_access_test.py::Test_rds_instance_no_public_access::test_rds_instance_private 
[gw3] PASSED tests/providers/aws/services/rds/rds_instance_no_public_access/rds_instance_no_public_access_test.py::Test_rds_instance_no_public_access::test_rds_instance_public 
[gw0] PASSED tests/providers/aws/services/rds/rds_instance_no_public_access/rds_instance_no_public_access_test.py::Test_rds_instance_no_public_access::test_rds_instance_private 
[gw2] PASSED tests/providers/aws/services/rds/rds_instance_no_public_access/rds_instance_no_public_access_test.py::Test_rds_instance_no_public_access::test_rds_instance_public_with_filtered_sg 
[gw1] PASSED tests/providers/aws/services/rds/rds_instance_no_public_access/rds_instance_no_public_access_test.py::Test_rds_instance_no_public_access::test_rds_instance_public_with_public_sg 
tests/providers/aws/services/rds/rds_instance_no_public_access/rds_instance_no_public_access_test.py::Test_rds_instance_no_public_access::test_rds_no_instances 
[gw1] PASSED tests/providers/aws/services/rds/rds_instance_no_public_access/rds_instance_no_public_access_test.py::Test_rds_instance_no_public_access::test_rds_no_instances 

================================================================= 5 passed in 15.72s ==================================================================

[madereddy]

Reviewed further, synced master branch back into my fork and then rebased this commit in and the PR Lint 3.9 succeeded.
https://github.com/madereddy/prowler/actions/runs/9100128819/job/25014246558

============================= test session starts ==============================
platform linux -- Python 3.9.19, pytest-8.2.0, pluggy-1.5.0
Using --randomly-seed=4172765213
rootdir: /home/runner/work/prowler/prowler
configfile: pyproject.toml
plugins: anyio-4.3.0, randomly-3.15.0, env-1.1.3, dash-2.17.0, cov-5.0.0, xdist-3.6.1
created: 4/4 workers
4 workers [3167 items]
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=============================== warnings summary ===============================
tests/providers/azure/services/defender/defender_auto_provisioning_log_analytics_agent_vms_on/defender_auto_provisioning_log_analytics_agent_vms_on_test.py::Test_defender_auto_provisioning_log_analytics_agent_vms_on::test_defender_auto_provisioning_log_analytics_on
  /home/runner/.cache/pypoetry/virtualenvs/prowler-MpuilnhB-py3.9/lib/python3.9/site-packages/azure/mgmt/security/v2023_01_01/models/_models_py3.py:91: DeprecationWarning: invalid escape sequence \ 
    """A plan's extension properties.
tests/providers/azure/services/defender/defender_auto_provisioning_log_analytics_agent_vms_on/defender_auto_provisioning_log_analytics_agent_vms_on_test.py::Test_defender_auto_provisioning_log_analytics_agent_vms_on::test_defender_auto_provisioning_log_analytics_on
  /home/runner/.cache/pypoetry/virtualenvs/prowler-MpuilnhB-py3.9/lib/python3.9/site-packages/azure/mgmt/security/v2023_01_01/models/_models_py3.py:144: DeprecationWarning: invalid escape sequence \ 
    """
tests/providers/azure/services/defender/defender_auto_provisioning_log_analytics_agent_vms_on/defender_auto_provisioning_log_analytics_agent_vms_on_test.py::Test_defender_auto_provisioning_log_analytics_agent_vms_on::test_defender_auto_provisioning_log_analytics_on
  /home/runner/.cache/pypoetry/virtualenvs/prowler-MpuilnhB-py3.9/lib/python3.9/site-packages/azure/mgmt/security/v2023_01_01/models/_models_py3.py:236: DeprecationWarning: invalid escape sequence \ 
    """Microsoft Defender for Cloud is provided in two pricing tiers: free and standard. The standard
-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
---------- coverage: platform linux, python 3.9.19-final-0 -----------
Coverage XML written to file coverage.xml
================= 3167 passed, 3 warnings in 886.53s (0:14:46) =================

[madereddy]

@sergargar @jfagoagas Can you rerun the failed lint test?

[codecov]

Codecov Report

Attention: Patch coverage is 93.33333% with 5 lines in your changes are missing coverage. Please review.

Project coverage is 86.64%. Comparing base (73b3484) to head (da92604).

Files	Patch %	Lines
..._expiration/rds_instance_certificate_expiration.py	95.08%	3 Missing ⚠️
prowler/providers/aws/services/rds/rds_service.py	85.71%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4002      +/-   ##
==========================================
+ Coverage   86.51%   86.64%   +0.12%     
==========================================
  Files         776      777       +1     
  Lines       24163    24237      +74     
==========================================
+ Hits        20904    20999      +95     
+ Misses       3259     3238      -21     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[madereddy]

Codecov Report

Attention: Patch coverage is 96.96970% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 86.50%. Comparing base (45ccd7e) to head (7e391db).
Report is 17 commits behind head on master.

Files Patch % Lines
prowler/providers/aws/services/rds/rds_service.py 85.71% 2 Missing ⚠️
Additional details and impacted files

☔ View full report in Codecov by Sentry. 📢 Have feedback on the report? Share it here.

@jfagoagas @sergargar Looking at the codecov report, I see that changes I made have more coverage, but indirectly the ec2 service is going down by about 5.47%. Is there anything I need to do to fix this?

[sergargar]

Hi @madereddy , I have added the case of RDS Certificates that expires in less than a month the check will FAIL with a severity of high.