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CVE-2021-39228
MEDIUM · CVSS 6.5
EPSS exploitation probability: 0%
Published 2021-09-17T14:15:08.413 · Last modified 2026-06-17T04:03:21.453

Summary

Tremor is an event processing system for unstructured data. A vulnerability exists between versions 0.7.2 and 0.11.6. This vulnerability is a memory safety Issue when using `patch` or `merge` on `state` and assign the result back to `state`. In this case, affected versions of Tremor and the tremor-script crate maintains references to memory that might have been freed already. And these memory regions can be accessed by retrieving the `state`, e.g. send it over TCP or HTTP. This requires the Tremor server (or any other program using tremor-script) to execute a tremor-script script that uses the mentioned language construct. The issue has been patched in version 0.11.6 by removing the optimization and always cloning the target expression of a Merge or Patch. If an upgrade is not possible, a

Affected products

linuxfoundation — tremor

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.