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Uncaught Exception in mercurius when using subscriptions

Moderate
mcollina published GHSA-cm8h-q92v-xcfc Jan 8, 2023

Package

npm mercurius (npm)

Affected versions

< 8.13.2; >= 9.0.0 < 11.5.0

Patched versions

>= 8.13.2 < 9.0.0 >= 11.5.0

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 #940.
The patch was released as v11.5.0 and v8.13.2.

Workarounds

Disable subscriptions.

References

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

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

CVE ID

CVE-2023-22477

Weaknesses

Credits