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🦀 crates.io

GHSA-3jch-9qgp-4844

CRITICAL

Generated code can read and write out of bounds in safe code

Also known asRUSTSEC-2021-0122
Published
Jun 16, 2022
Updated
Nov 8, 2023
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed

Blast Radius

1 pkg affected
🦀flatbuffers

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects crates.io packages — download data is not available via public APIs for these ecosystems.

Description

Code generated by flatbuffers' compiler is unsafe but not marked as such. See https://github.com/google/flatbuffers/issues/6627 for details.

All users that use generated code by flatbuffers compiler are recommended to:

  1. not expose flatbuffer generated code as part of their public APIs
  2. audit their code and look for any usage of follow, push, or any method that uses them (e.g. self_follow).
  3. Carefuly go through the crates' documentation to understand which "safe" APIs are not intended to be used.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🦀crates.ioflatbuffersall versions22.9.29

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for flatbuffers. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Fix

    Update flatbuffers to 22.9.29 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-3jch-9qgp-4844 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 pinpoints whether GHSA-3jch-9qgp-4844 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-3jch-9qgp-4844. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

Code generated by flatbuffers' compiler is `unsafe` but not marked as such. See https://github.com/google/flatbuffers/issues/6627 for details. All users that use generated code by `flatbuffers` compiler are recommended to: 1. not expose flatbuffer generated code as part of their public APIs 2. audit their code and look for any usage of `follow`, `push`, or any method that uses them (e.g. `self_follow`). 3. Carefuly go through the crates' documentation to understand which "safe" APIs are not intended to be used.
O3 Security · Impact-Aware SCA

Is GHSA-3jch-9qgp-4844 in your dependencies?

O3 detects GHSA-3jch-9qgp-4844 across crates.io dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.