Feathers socket handler allows abusing implicit toString
### Impact Feathers socket handler did not catch invalid string conversion errors like: ```ts const message = `${{ toString: '' }}` ``` Causing the NodeJS process to crash when sending an unexpected Socket.io message like ```ts socket.emit('find', { toString: '' }) ``` ### Patches A fix has been released in - `v5.0.8` via #3241 - `v4.5.18` via #3242 ### Workarounds Since it is in the core Socket handling code upgrading to the latest version is necessary. ### References - [v5.0.8 Changelog](https://github.com/feathersjs/feathers/blob/dove/CHANGELOG.md#508-2023-07-19) - [v4.5.18 Changelog](https://github.com/feathersjs/feathers/blob/crow/CHANGELOG.md#4518-2023-07-19)
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2023-37899US | high7.5 | — | ||
Feathersjs is a framework for creating web APIs and real-time applications with TypeScript or JavaScript. Feathers socket handler did not catch invalid string conversion errors lik… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/feathersjs/feathersPACKAGE
- https://github.com/feathersjs/feathers/blob/crow/CHANGELOG.md#4518-2023-07-19WEB
- https://github.com/feathersjs/feathers/blob/dove/CHANGELOG.md#508-2023-07-19WEB
- https://github.com/feathersjs/feathers/commit/0b9a6b19b12ad05934e4c8bd9917448ed39d1ed8WEB
- https://github.com/feathersjs/feathers/commit/c397ab3a0cd184044ae4f73540549b30a396821cWEB
- https://github.com/feathersjs/feathers/pull/3241WEB
- https://github.com/feathersjs/feathers/pull/3242WEB
- https://github.com/feathersjs/feathers/security/advisories/GHSA-hhr9-rh25-hvf9WEB
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