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 possible workaround is to avoid the optimization by introducing a temporary variable and not immediately reassigning to `state`.
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Affected Vendors & Products
References
History
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2024-08-04T01:58:18.328Z
Reserved: 2021-08-16T00:00:00
Link: CVE-2021-39228
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Status : Modified
Published: 2021-09-17T14:15:08.413
Modified: 2024-11-21T06:18:57.560
Link: CVE-2021-39228
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