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mercurius has Uncaught Exception when using subscriptions

Moderate severity GitHub Reviewed Published Jan 8, 2023 in mercurius-js/mercurius • Updated Feb 3, 2023

Package

npm mercurius (npm)

Affected versions

>= 9.0.0, < 11.5.0
< 8.13.2

Patched versions

11.5.0
8.13.2

Description

Impact

Any users of Mercurius until version v11.5.0 are subjected to a denial of service attack by sending a malformed packet over WebSocket to /graphql.

Patches

This was patched in mercurius-js/mercurius#940.
The patch was released as v11.5.0 and v8.13.2.

Workarounds

Disable subscriptions.

References

Reported publicly as mercurius-js/mercurius#939.
The same problem was solved in fastify/fastify-websocket#228

References

@mcollina mcollina published to mercurius-js/mercurius Jan 8, 2023
Published by the National Vulnerability Database Jan 9, 2023
Published to the GitHub Advisory Database Jan 9, 2023
Reviewed Jan 9, 2023
Last updated Feb 3, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS score

0.151%
(52nd percentile)

Weaknesses

CVE ID

CVE-2023-22477

GHSA ID

GHSA-cm8h-q92v-xcfc

Source code

Credits

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