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Crash on malformed packet

High
mcollina published GHSA-4pcg-wr6c-h9cq Nov 4, 2022

Package

npm @fastify/websocket (npm)

Affected versions

5.0.0, >= 6.0.0 < 7.1.1

Patched versions

>= 5.0.1 < 6, >= 7.1.1
npm fastify-websocket (npm)
*
None

Description

Impact

Any application using @fastify/websocket could crash if a specific, malformed packet is sent.

All versions of fastify-websocket are also impacted. That module is deprecated, so it will not be patched.

Patches

This has been patched in v7.1.1 (fastify v4) and v5.0.1 (fastify v3).

Workarounds

No known workaround is available. However, it should be possible to attach the error handler manually.
The recommended path is upgrading to the patched versions.

Credits

marcolanaro for finding and patching this vulnerability

For more information

If you have any questions or comments about this advisory:

Severity

High
7.5
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVE ID

CVE-2022-39386

Weaknesses

Credits