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Uncaught Exception in mercurius

High severity GitHub Reviewed Published Dec 13, 2021 in mercurius-js/mercurius • Updated Feb 1, 2023

Package

npm mercurius (npm)

Affected versions

>= 8.10.0, < 8.11.2

Patched versions

8.11.2

Description

Impact

Any users from Mercurius@8.10.0 to 8.11.1 are subjected to a denial of service attack by sending a malformed JSON to /graphql unless they are using a custom error handler.

Patches

The vulnerability has been fixed in mercurius-js/mercurius#678 and shipped as v8.11.2.

Workarounds

Use a custom error handler.

References

See mercurius-js/mercurius#677

For more information

If you have any questions or comments about this advisory:

References

@mcollina mcollina published to mercurius-js/mercurius Dec 13, 2021
Published by the National Vulnerability Database Dec 13, 2021
Reviewed Dec 13, 2021
Published to the GitHub Advisory Database Dec 13, 2021
Last updated Feb 1, 2023

Severity

High

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
High

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:H

EPSS score

0.147%
(52nd percentile)

Weaknesses

CVE ID

CVE-2021-43801

GHSA ID

GHSA-273r-rm8g-7f3x

Source code

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