CVE-2024-11991

Motoko's incremental garbage collector is impacted by an uninitialized memory access bug, caused by incorrect use of write barriers in a few locations. This vulnerability could potentially allow unauthorized read or write access to a Canister's memory. However, exploiting this bug requires the Canister to enable the incremental garbage collector or enhanced orthogonal persistence, which are non-default features in Motoko.

CVSS v3 5.6 MEDIUM

5.6^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/dfinity/motoko/pull/4677	Issue Tracking Patch
https://github.com/dfinity/motoko/security/advisories/GHSA-9rhg-3qf8-hrv3	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:dfinity:motoko:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2024-12-09 15:15

Updated : 2025-12-08 18:51

NVD link : CVE-2024-11991

Mitre link : CVE-2024-11991

CVE.ORG link : CVE-2024-11991

JSON object : View

Products Affected

dfinity

motoko

CWE

CWE-908

Use of Uninitialized Resource

{"id": "CVE-2024-11991", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "6b35d637-e00f-4228-858c-b20ad6e1d07b", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.6, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 3.4, "exploitabilityScore": 2.2}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 3.9}]}, "published": "2024-12-09T15:15:12.203", "references": [{"url": "https://github.com/dfinity/motoko/pull/4677", "tags": ["Issue Tracking", "Patch"], "source": "6b35d637-e00f-4228-858c-b20ad6e1d07b"}, {"url": "https://github.com/dfinity/motoko/security/advisories/GHSA-9rhg-3qf8-hrv3", "tags": ["Vendor Advisory"], "source": "6b35d637-e00f-4228-858c-b20ad6e1d07b"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "6b35d637-e00f-4228-858c-b20ad6e1d07b", "description": [{"lang": "en", "value": "CWE-908"}]}], "descriptions": [{"lang": "en", "value": "Motoko's incremental garbage collector is impacted by an uninitialized memory access bug, caused by incorrect use of write barriers in a few locations. This vulnerability could potentially allow unauthorized read or write access to a Canister's memory. However, exploiting this bug requires the Canister to enable the incremental garbage collector or enhanced orthogonal persistence, which are non-default features in Motoko."}, {"lang": "es", "value": "El recolector de basura incremental de Motoko se ve afectado por un error de acceso a memoria no inicializada, causado por el uso incorrecto de barreras de escritura en algunas ubicaciones. Esta vulnerabilidad podr\u00eda permitir el acceso de lectura o escritura no autorizado a la memoria de un contenedor. Sin embargo, para explotar este error, es necesario que el contenedor habilite el recolector de basura incremental o la persistencia ortogonal mejorada, que son funciones no predeterminadas en Motoko."}], "lastModified": "2025-12-08T18:51:42.820", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:dfinity:motoko:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "00F86BCE-31BC-463B-8CF2-9F581168793D", "versionEndExcluding": "0.13.4", "versionStartIncluding": "0.9.0"}], "operator": "OR"}]}], "sourceIdentifier": "6b35d637-e00f-4228-858c-b20ad6e1d07b"}