High-level security incident response handling process

The goal of this high-level process is to identify what needs to be done for a security response, and who can help making it happen.

1. Awareness
Task Duration Who can do it Notes
Make security team aware - Whoever being aware about security issue Its important to handle the issue properly from the beginning.
2. Identification
Task Duration Who can do it Notes
Analyze report - Security response team Assess incoming reports for validity and potential severity.
3. Assesment
Task Duration Who can do it Notes
Impact evaluation - Security response team Determine the potential impact on users and the project (e.g., data exposure, remote code execution).
Risk categorization - Security response team Assign severity levels (e.g., Critical, High, Medium, Low) using frameworks like CVSS.
Confirm the issue - Security response team Reproduce the issue in a controlled environment to confirm its validity.
4. Containment
Task Duration Who can do it Notes
Prevent further exploitation - - Take immediate action to limit the incident’s impact (e.g., temporarily disabling a vulnerable feature, service)
Communicate internally - Security response team Notify relevant maintainers, sysadmins to coordinate the response
5. Remediation
Task Duration Who can do it Notes
Fix the vulnerability - - Patch the issue in the codebase and thoroughly test the fix
Backport fixes - - Apply fixes to older supported versions, if necessary
6. Disclosure
Task Duration Who can do it Notes
Communicate with reporter - Security response team Notify the reporter of the fix and thank them for their contribution.
Submit CVE - Security response team If applicable, request a CVE ID for tracking and disclosure
Publish security advisory on wiki - Security response team Use previous advisories as template
Publish advisory to mailing list - Security response team Use previous emails as template, GPG sign email!
Publish advisory on forum - Security response team Use previous posts as template, probably makes sense always for remotely exploitable or critical vulnerabilities.