{"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"]}]}]}}

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mobyproject:hyperkit:*:*:*:*:*:*:*:*", "matchCriteriaId": "0AE32831-24E2-44FD-939C-E6F799A5D632", "versionEndIncluding": "0.20210107", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "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."}], "id": "CVE-2021-32845", "lastModified": "2024-11-21T06:07:52.230", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 5.2, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2023-02-17T23:15:11.963", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/moby/hyperkit/commit/41272a980197917df8e58ff90642d14dec8fe948"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/moby/hyperkit/pull/313"}, {"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://securitylab.github.com/advisories/GHSL-2021-054_057-moby-hyperkit/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://github.com/moby/hyperkit/commit/41272a980197917df8e58ff90642d14dec8fe948"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://github.com/moby/hyperkit/pull/313"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://securitylab.github.com/advisories/GHSL-2021-054_057-moby-hyperkit/"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-908"}], "source": "security-advisories@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-252"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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