In short
- CVE-2023-25576 is a HIGH (CVSS 7.5) vulnerability affecting fastify-multipart (fastify), @fastify/multipart.
- Chance of exploitation in the next 30 days (EPSS): 1.5%, higher than 73.6% of all vulnerabilities.
- Fix: update to 7.4.1, 6.0.1 or later.
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.
NVD description
@fastify/multipart is a Fastify plugin to parse the multipart content-type. Prior to versions 7.4.1 and 6.0.1, @fastify/multipart may experience denial of service due to a number of situations in which an unlimited number of parts are accepted. This includes the multipart body parser accepting an unlimited number of file parts, the multipart body parser accepting an unlimited number of field parts, and the multipart body parser accepting an unlimited number of empty parts as field parts. This is fixed in v7.4.1 (for Fastify v4.x) and v6.0.1 (for Fastify v3.x). There are no known workarounds.
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