Uncaught Exception in fastify-multipart
### Impact This is a bypass of CVE-2020-8136 (https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8136). By providing a `name=constructor` property it is still possible to crash the application. The original fix only checks for the key `__proto__` (https://github.com/fastify/fastify-multipart/pull/116). All users are recommended to upgrade ### Patches v5.3.1 includes a patch ### Workarounds No workarounds are possible. ### References Read up https://www.fastify.io/docs/latest/Guides/Prototype-Poisoning/ ### For more information If you have any questions or comments about this advisory: * Open an issue in [https://github.com/fastify/fastify-multipart](https://github.com/fastify/fastify-multipart) * Email us at [hello@matteocollina.com](mailto:hello@matteocollina.com)
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2021-23597US | high7.5 | — | ||
This affects the package fastify-multipart before 5.3.1. By providing a name=constructor property it is still possible to crash the application. **Note:** This is a bypass of CVE-2… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/fastify/fastify-multipartWEB
- https://github.com/fastify/fastify-multipart/commit/a70dc7059a794589bd4fe066453141fc609e6066WEB
- https://github.com/fastify/fastify-multipart/pull/116WEB
- https://github.com/fastify/fastify-multipart/releases/tag/v5.3.1WEB
- https://github.com/fastify/fastify-multipart/security/advisories/GHSA-qh73-qc3p-rjv2WEB
- https://nvd.nist.gov/vuln/detail/CVE-2021-23597ADVISORY
- https://snyk.io/vuln/SNYK-JS-FASTIFYMULTIPART-2395480WEB
- https://www.fastify.io/docs/latest/Guides/Prototype-PoisoningWEB
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