CVE-2023-47169

What it actually does

Improper buffer restrictions in affected software allow an authenticated local user to trigger denial of service.

Why it matters to the business

Local authenticated users can disrupt service availability on systems running the vulnerable software, potentially affecting operational continuity until mitigated.

How an attack unfolds

An attacker with local authenticated access crafts input that exploits improper buffer handling to cause a crash or resource exhaustion, resulting in denial of service.

How to fix it

Upgrade Apache NiFi to version 1.23.1 or later; apply the commit f739e9dd2d476b3c0df5a806ff1dffd24be52916 for Git-based deployments of affected components.

How to confirm the fix worked

Verify the installed version matches or exceeds the fixed releases listed; test that the denial-of-service condition is no longer reproducible with crafted local input.

Typical attack path

1. Obtain local authenticated access to a system running the vulnerable software
2. Craft and supply malicious input that triggers the buffer restriction flaw
3. Cause service crash or resource exhaustion leading to denial of service

How to detect it

Review local system logs for unexpected crashes or restarts of the affected process; examine authentication logs for unusual local sessions around the time of service disruption.

What your security team should do

• Prioritize upgrade of all listed Apache NiFi packages to the fixed versions within standard change windows
• Review local access controls to limit authenticated users who can interact with the affected software
• Monitor for any post-upgrade stability issues related to media processing workloads