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DoS due to unlimited number of parts

High
mcollina published GHSA-hpp2-2cr5-pf6g Feb 14, 2023

Package

npm @fastify/multipart (npm)

Affected versions

<= 6.0.0; 7.0.0 <= 7.4.0

Patched versions

>= 6.0.1 < 7.0.0; >= 7.4.1

Description

Impact

  • The multipart body parser accepts an unlimited number of file parts.
  • The multipart body parser accepts an unlimited number of field parts.
  • The multipart body parser accepts an unlimited number of empty parts as field
    parts.

Patches

This is fixed in v7.4.1 (for Fastify v4.x) and v6.0.1 (for Fastify v3.x).

Workarounds

There are no known workaround.

References

Reported at https://hackerone.com/reports/1816195.

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

CVE ID

CVE-2023-25576

Weaknesses

Credits