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        "cveId": "CVE-2024-11991",
        "assignerOrgId": "6b35d637-e00f-4228-858c-b20ad6e1d07b",
        "state": "PUBLISHED",
        "assignerShortName": "Dfinity",
        "dateReserved": "2024-11-29T10:02:19.279Z",
        "datePublished": "2024-12-09T14:38:07.288Z",
        "dateUpdated": "2024-12-09T15:07:37.640Z"
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    "containers": {
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            "affected": [
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                    "defaultStatus": "unaffected",
                    "packageName": "moc",
                    "product": "Motoko",
                    "vendor": "Internet Computer",
                    "versions": [
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                            "lessThanOrEqual": "0.13.3",
                            "status": "affected",
                            "version": "0.9.0",
                            "versionType": "semver"
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                            "value": "<p></p><p>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.</p><p></p>"
                        }
                    ],
                    "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."
                }
            ],
            "impacts": [
                {
                    "capecId": "CAPEC-131",
                    "descriptions": [
                        {
                            "lang": "en",
                            "value": "CAPEC-131 Resource Leak Exposure"
                        }
                    ]
                }
            ],
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                    "cvssV3_1": {
                        "attackComplexity": "HIGH",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "LOW",
                        "baseScore": 5.6,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "LOW",
                        "integrityImpact": "LOW",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
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                            "value": "GENERAL"
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                    "descriptions": [
                        {
                            "cweId": "CWE-908",
                            "description": "CWE-908 Use of Uninitialized Resource",
                            "lang": "en",
                            "type": "CWE"
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            },
            "references": [
                {
                    "url": "https://github.com/dfinity/motoko/pull/4677"
                },
                {
                    "url": "https://github.com/dfinity/motoko/security/advisories/GHSA-9rhg-3qf8-hrv3"
                }
            ],
            "source": {
                "discovery": "UNKNOWN"
            },
            "title": "Uninitialized memory access in Motoko incremental garbage collector",
            "workarounds": [
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                    "lang": "en",
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                            "value": "<p>Disable incremental garbage collector and enhanced orthogonal persistence. i.e. do <strong>not compile</strong>&nbsp;with&nbsp;<i>—incremental-gc</i> or <i>--enhanced-orthogonal-persistence</i> options.</p>"
                        }
                    ],
                    "value": "Disable incremental garbage collector and enhanced orthogonal persistence. i.e. do not compile with —incremental-gc or --enhanced-orthogonal-persistence options."
                }
            ],
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                            "content": {
                                "timestamp": "2024-12-09T15:07:27.354775Z",
                                "id": "CVE-2024-11991",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
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                                        "Automatable": "no"
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                                        "Technical Impact": "partial"
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                                "role": "CISA Coordinator",
                                "version": "2.0.3"
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                "title": "CISA ADP Vulnrichment",
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