CVE-2021-32844

HyperKit is a toolkit for embedding hypervisor capabilities in an application. In versions 0.20210107 and prior of HyperKit, ` vi_pci_write` has is a call to `vc_cfgwrite` that does not check for null which when called makes the host crash. This issue may lead to a guest crashing the host causing a denial of service. This issue is fixed in commit 451558fe8aaa8b24e02e34106e3bb9fe41d7ad13.

CVSS v3 6.2 MEDIUM

6.2^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.5 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/moby/hyperkit/commit/451558fe8aaa8b24e02e34106e3bb9fe41d7ad13	Patch
https://github.com/moby/hyperkit/pull/313	Patch
https://securitylab.github.com/advisories/GHSL-2021-054_057-moby-hyperkit/	Third Party Advisory
https://github.com/moby/hyperkit/commit/451558fe8aaa8b24e02e34106e3bb9fe41d7ad13	Patch
https://github.com/moby/hyperkit/pull/313	Patch
https://securitylab.github.com/advisories/GHSL-2021-054_057-moby-hyperkit/	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:mobyproject:hyperkit:*:*:*:*:*:*:*:*

History

21 Nov 2024, 06:07

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~5.5~~	v2 : unknown v3 : 6.2
References	~~() https://github.com/moby/hyperkit/commit/451558fe8aaa8b24e02e34106e3bb9fe41d7ad13 - Patch~~	() https://github.com/moby/hyperkit/commit/451558fe8aaa8b24e02e34106e3bb9fe41d7ad13 - Patch
References	~~() https://github.com/moby/hyperkit/pull/313 - Patch~~	() https://github.com/moby/hyperkit/pull/313 - Patch
References	~~() https://securitylab.github.com/advisories/GHSL-2021-054_057-moby-hyperkit/ - Third Party Advisory~~	() https://securitylab.github.com/advisories/GHSL-2021-054_057-moby-hyperkit/ - Third Party Advisory

Information

Published : 2023-02-17 23:15

Updated : 2024-11-21 06:07

NVD link : CVE-2021-32844

Mitre link : CVE-2021-32844

CVE.ORG link : CVE-2021-32844

JSON object : View

Products Affected

mobyproject

hyperkit

CWE

CWE-476

NULL Pointer Dereference

{"id": "CVE-2021-32844", "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.2, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.5}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2023-02-17T23:15:11.887", "references": [{"url": "https://github.com/moby/hyperkit/commit/451558fe8aaa8b24e02e34106e3bb9fe41d7ad13", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/moby/hyperkit/pull/313", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://securitylab.github.com/advisories/GHSL-2021-054_057-moby-hyperkit/", "tags": ["Third Party Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/moby/hyperkit/commit/451558fe8aaa8b24e02e34106e3bb9fe41d7ad13", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://github.com/moby/hyperkit/pull/313", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://securitylab.github.com/advisories/GHSL-2021-054_057-moby-hyperkit/", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-476"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "HyperKit is a toolkit for embedding hypervisor capabilities in an application. In versions 0.20210107 and prior of HyperKit, ` vi_pci_write` has is a call to `vc_cfgwrite` that does not check for null which when called makes the host crash. This issue may lead to a guest crashing the host causing a denial of service. This issue is fixed in commit 451558fe8aaa8b24e02e34106e3bb9fe41d7ad13."}], "lastModified": "2024-11-21T06:07:52.110", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:mobyproject:hyperkit:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0AE32831-24E2-44FD-939C-E6F799A5D632", "versionEndIncluding": "0.20210107"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}