🚨 [security] Update protobufjs 8.6.5 → 8.6.6 (patch)

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🚨 Your current dependencies have known security vulnerabilities 🚨

This dependency update fixes known security vulnerabilities. Please see the details below and assess their impact carefully. We recommend to merge and deploy this as soon as possible!

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Here is everything you need to know about this update. Please take a good look at what changed and the test results before merging this pull request.

What changed?

✳️ protobufjs (8.6.5 → 8.6.6) · Repo · Changelog

Security Advisories 🚨

🚨 protobufjs: Denial of Service via infinite loop in .proto option parsing

Summary

protobufjs parsed option names by advancing through schema tokens until it reached an = token, without checking for end of input. A crafted .proto schema that opens an option declaration but ends prematurely could cause the option parser to loop without ever terminating.

This affects the reflection parsing path (parse, Root.load, Root.loadSync).

Impact

An attacker who can provide or influence .proto schema text parsed by an application may be able to cause the parsing call to never return. Because Node.js is single-threaded, the blocked event loop prevents all other work in the process, resulting in a denial of service that persists until the process is externally terminated.

Applications that only encode or decode protobuf binary data with trusted schemas are not directly affected.

Preconditions

• The application must parse .proto schema text influenced by an attacker.
• The schema must be parsed through APIs such as parse, Root.load, or Root.loadSync.
• The crafted input must begin an option declaration that ends before its = assignment.

Workarounds

Do not parse .proto schemas from untrusted sources with affected versions. If untrusted schema text must be accepted, isolate parsing in a process or worker that can be safely terminated and bound it with a timeout, so a non-returning parse call cannot deny service to the rest of the application.

Release Notes

8.6.6 (from changelog)

Bug Fixes

• Filter Any type_url lookups to message types (#2346) (88f0aa1)
• handle EOF during options parsing (#2352) (fa5c73a)

Does any of this look wrong? Please let us know.

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