CVE-2022-46871

What it actually does

Outdated libusrsctp library contains memory corruption vulnerabilities that can be triggered during SCTP processing, enabling arbitrary code execution within the browser process.

Why it matters to the business

Compromised endpoints could result in data theft, ransomware deployment, or lateral movement across the organization; widespread Firefox usage amplifies exposure across many environments.

How an attack unfolds

An attacker serves malicious web content or network traffic that exercises the vulnerable SCTP handling code in the outdated library; memory corruption is triggered to achieve code execution and control the browser process.

How to fix it

Upgrade Mozilla Firefox to version 108 or later to replace the vulnerable libusrsctp library; apply the latest security updates on Debian systems that package Firefox.

How to confirm the fix worked

Confirm installed Firefox version is 108 or newer via about:support or package manager output; verify the bundled libusrsctp library has been updated in the browser binary.

Typical attack path

1. Serve crafted web content or SCTP traffic to a target Firefox instance
2. Browser processes the input using the vulnerable libusrsctp library
3. Memory corruption flaw is triggered leading to arbitrary code execution
4. Attacker establishes persistence or performs follow-on actions on the compromised system

How to detect it

Inspect browser crash reports and memory dumps for libusrsctp-related faults; monitor network logs for anomalous SCTP or WebRTC traffic originating from Firefox processes.

What your security team should do

• Immediately deploy Firefox 108 or newer across all managed endpoints
• Enforce automatic browser updates through enterprise policy
• Review and restrict unnecessary WebRTC or SCTP features where feasible