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.
Basic information
- Type
- reviewed
- Severity
- high
- Advisory on GitHub
- Open advisory ↗
- Repository advisory
- Open repository advisory ↗
- Source code
- Browse source ↗
- Published (advisory)
- 2023-02-14 21:49:55 UTC
- Updated
- 2023-02-22 18:35:10 UTC
- GitHub reviewed
- 2023-02-14 21:49:55 UTC
- NVD published
- 2023-02-14
EPSS Score
| Score |
Percentile |
|
0.71%
|
71.83% |
CVSS Scores
| Base score |
Version |
Severity |
Vector |
|
7.5
|
3.1 |
—
|
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Click to expand
- Attack vector (AV:N)
- Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
- Attack complexity (AC:L)
- Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
- Privileges required (PR:N)
- No account or special rights needed—anonymous or random user is enough.
- User interaction (UI:N)
- Nobody has to click “OK” or open a trap file; it can work without a victim helping.
- Scope (S:U)
- Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
- Confidentiality (C:N)
- Doesn’t really leak secrets in a meaningful way.
- Integrity (I:N)
- Data isn’t meaningfully altered or forged.
- Availability (A:H)
- Could take the service down hard or make it unusable for people who depend on it.
|
CWEs
| CWE id |
Name |
|
CWE-400
|
Uncontrolled Resource Consumption |
|
CWE-770
|
Allocation of Resources Without Limits or Throttling |
Affected packages (2)
Vulnerable version ranges and first patched releases as published by GitHub.
| Ecosystem |
Package |
Vulnerable range |
First patched |
Vulnerable functions |
| npm |
@fastify/multipart |
< 6.0.1 |
6.0.1 |
—
|
| npm |
@fastify/multipart |
>= 7.0.0, < 7.4.1 |
7.4.1 |
—
|
cvelogic
Threat Intelligence