{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-12T17:14:59.399","vulnerabilities":[{"cve":{"id":"CVE-2021-39228","sourceIdentifier":"security-advisories@github.com","published":"2021-09-17T14:15:08.413","lastModified":"2024-11-21T06:18:57.560","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"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`."},{"lang":"es","value":"Tremor es un sistema de procesamiento de eventos para datos no estructurados. Se presenta una vulnerabilidad entre las versiones 0.7.2 y 0.11.6. Esta vulnerabilidad es un problema de seguridad de memoria cuando es usado \"patch\" o \"merge\" en \"state\" y se asigna el resultado de nuevo a \"state\". En este caso, las versiones afectadas de Tremor y el crate tremor-script mantienen referencias a la memoria que podrían haber sido liberadas ya. Y estas regiones de memoria pueden ser accedidas al recuperar el \"state\", por ejemplo, enviándolo por TCP o HTTP. Esto requiere que el servidor Tremor (o cualquier otro programa usando tremor-script) ejecute un script tremor-script que use la construcción de lenguaje mencionada. El problema ha sido parcheado en la versión 0.11.6, al eliminar la optimización y clonando siempre la expresión de destino de una Fusión o Parche. Si no es posible una actualización, una posible solución es evitar la optimización introduciendo una variable temporal y no reasignando inmediatamente a \"state\""}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":2.5},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P","baseScore":7.5,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL"},"baseSeverity":"HIGH","exploitabilityScore":10.0,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-416"},{"lang":"en","value":"CWE-825"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-416"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:linuxfoundation:tremor:*:*:*:*:*:*:*:*","versionStartIncluding":"0.7.2","versionEndExcluding":"0.11.6","matchCriteriaId":"970F7787-81D3-4A1C-B0C2-78D2A9C1D596"}]}]}],"references":[{"url":"https://github.com/tremor-rs/tremor-runtime/commit/1a2efcdbe68e5e7fd0a05836ac32d2cde78a0b2e","source":"security-advisories@github.com","tags":["Patch","Third Party Advisory"]},{"url":"https://github.com/tremor-rs/tremor-runtime/pull/1217","source":"security-advisories@github.com","tags":["Exploit","Patch","Third Party Advisory"]},{"url":"https://github.com/tremor-rs/tremor-runtime/releases/tag/v0.11.6","source":"security-advisories@github.com","tags":["Release Notes","Third Party Advisory"]},{"url":"https://github.com/tremor-rs/tremor-runtime/security/advisories/GHSA-mc22-5q92-8v85","source":"security-advisories@github.com","tags":["Mitigation","Third Party Advisory"]},{"url":"https://github.com/tremor-rs/tremor-runtime/commit/1a2efcdbe68e5e7fd0a05836ac32d2cde78a0b2e","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory"]},{"url":"https://github.com/tremor-rs/tremor-runtime/pull/1217","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Patch","Third Party Advisory"]},{"url":"https://github.com/tremor-rs/tremor-runtime/releases/tag/v0.11.6","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Release Notes","Third Party Advisory"]},{"url":"https://github.com/tremor-rs/tremor-runtime/security/advisories/GHSA-mc22-5q92-8v85","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mitigation","Third Party Advisory"]}]}}]}