{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "state": "PUBLISHED",
        "cveId": "CVE-2021-32845",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "dateUpdated": "2024-08-03T23:33:56.108Z",
        "dateReserved": "2021-05-12T00:00:00",
        "datePublished": "2023-02-17T00:00:00"
    },
    "containers": {
        "cna": {
            "title": "Moby HyperKit uninitialized memory use vtrnd pci_vtrnd_notify",
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2023-02-17T00:00:00"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "HyperKit is a toolkit for embedding hypervisor capabilities in an application. In versions 0.20210107 and prior of HyperKit, the implementation of `qnotify` at `pci_vtrnd_notify` fails to check the return value of `vq_getchain`. This leads to `struct iovec iov;` being uninitialized and used to read memory in `len = (int) read(sc->vrsc_fd, iov.iov_base, iov.iov_len);` when an attacker is able to make `vq_getchain` fail. This issue may lead to a guest crashing the host causing a denial of service and, under certain circumstance, memory corruption. This issue is fixed in commit 41272a980197917df8e58ff90642d14dec8fe948."
                }
            ],
            "affected": [
                {
                    "vendor": "moby",
                    "product": "hyperkit",
                    "versions": [
                        {
                            "version": "0.20210107",
                            "status": "affected",
                            "lessThanOrEqual": "0.20210107",
                            "versionType": "custom"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://securitylab.github.com/advisories/GHSL-2021-054_057-moby-hyperkit/"
                },
                {
                    "url": "https://github.com/moby/hyperkit/pull/313"
                },
                {
                    "url": "https://github.com/moby/hyperkit/commit/41272a980197917df8e58ff90642d14dec8fe948"
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
                        "attackVector": "LOCAL",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "HIGH",
                        "availabilityImpact": "HIGH",
                        "baseScore": 7.7,
                        "baseSeverity": "HIGH"
                    }
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "type": "CWE",
                            "lang": "en",
                            "description": "CWE-908 Use of Uninitialized Resource",
                            "cweId": "CWE-908"
                        }
                    ]
                }
            ],
            "x_generator": {
                "engine": "Vulnogram 0.0.9"
            },
            "source": {
                "advisory": "GHSL-2021-056",
                "defect": [
                    "GHSL-2021-056"
                ],
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-03T23:33:56.108Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://securitylab.github.com/advisories/GHSL-2021-054_057-moby-hyperkit/",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://github.com/moby/hyperkit/pull/313",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://github.com/moby/hyperkit/commit/41272a980197917df8e58ff90642d14dec8fe948",
                        "tags": [
                            "x_transferred"
                        ]
                    }
                ]
            }
        ]
    }
}