2 lines
6.6 KiB
JSON
2 lines
6.6 KiB
JSON
{"affected":[{"affectedData":[{"product":"QEMU (virtio-net)","vendor":"n/a","versions":[{"status":"affected","version":"Affects qemu v0.10.0 and above, Fixed In – v6.2.0-rc0 and above."}]}],"source":"secalert@redhat.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*","matchCriteriaId":"69067884-3C1C-4933-8955-489BC2EB5BD5","versionEndExcluding":"6.2.0","versionStartIncluding":"0.10.0","vulnerable":true}],"negate":false,"operator":"OR"}]},{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*","matchCriteriaId":"DEECE5FC-CACF-4496-A3E7-164736409252","vulnerable":true},{"criteria":"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*","matchCriteriaId":"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73","vulnerable":true}],"negate":false,"operator":"OR"}]},{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*","matchCriteriaId":"23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D","vulnerable":true},{"criteria":"cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*","matchCriteriaId":"902B8056-9E37-443B-8905-8AA93E2447FB","vulnerable":true},{"criteria":"cpe:2.3:o:canonical:ubuntu_linux:21.10:*:*:*:*:*:*:*","matchCriteriaId":"AAE4D2D0-CEEB-416F-8BC5-A7987DF56190","vulnerable":true}],"negate":false,"operator":"OR"}]},{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*","matchCriteriaId":"A930E247-0B43-43CB-98FF-6CE7B8189835","vulnerable":true}],"negate":false,"operator":"OR"}]},{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:*","matchCriteriaId":"3AA08768-75AF-4791-B229-AE938C780959","vulnerable":true},{"criteria":"cpe:2.3:o:redhat:enterprise_linux_advanced_virtualization_eus:8.4:*:*:*:*:*:*:*","matchCriteriaId":"04F853F5-C907-48A3-BDED-2AC3923E4010","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"A use-after-free vulnerability was found in the virtio-net device of QEMU. It could occur when the descriptor's address belongs to the non direct access region, due to num_buffers being set after the virtqueue elem has been unmapped. A malicious guest could use this flaw to crash QEMU, resulting in a denial of service condition, or potentially execute code on the host with the privileges of the QEMU process."},{"lang":"es","value":"Se ha encontrado una vulnerabilidad de uso de memoria previamente liberada en el dispositivo virtio-net de QEMU. Podría ocurrir cuando la dirección del descriptor pertenece a la región de acceso no directo, debido a que num_buffers es establecido después de que el elemento virtqueue haya sido desmapeado. Un huésped malicioso podría usar este fallo para bloquear QEMU, resultando en una condición de denegación de servicio, o potencialmente ejecutar código en el host con los privilegios del proceso QEMU"}],"id":"CVE-2021-3748","lastModified":"2026-06-17T04:05:41.413","metrics":{"cvssMetricV2":[{"acInsufInfo":false,"baseSeverity":"MEDIUM","cvssData":{"accessComplexity":"MEDIUM","accessVector":"LOCAL","authentication":"NONE","availabilityImpact":"COMPLETE","baseScore":6.9,"confidentialityImpact":"COMPLETE","integrityImpact":"COMPLETE","vectorString":"AV:L/AC:M/Au:N/C:C/I:C/A:C","version":"2.0"},"exploitabilityScore":3.4,"impactScore":10.0,"obtainAllPrivilege":false,"obtainOtherPrivilege":false,"obtainUserPrivilege":false,"source":"nvd@nist.gov","type":"Primary","userInteractionRequired":false}],"cvssMetricV31":[{"cvssData":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"exploitabilityScore":0.8,"impactScore":6.0,"source":"nvd@nist.gov","type":"Primary"}]},"published":"2022-03-23T20:15:09.893","references":[{"source":"secalert@redhat.com","tags":["Issue Tracking","Patch","Third Party Advisory"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1998514"},{"source":"secalert@redhat.com","tags":["Patch","Third Party Advisory"],"url":"https://github.com/qemu/qemu/commit/bedd7e93d01961fcb16a97ae45d93acf357e11f6"},{"source":"secalert@redhat.com","tags":["Mailing List","Third Party Advisory"],"url":"https://lists.debian.org/debian-lts-announce/2022/04/msg00002.html"},{"source":"secalert@redhat.com","tags":["Mailing List","Third Party Advisory"],"url":"https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html"},{"source":"secalert@redhat.com","tags":["Mailing List","Patch","Third Party Advisory"],"url":"https://lists.nongnu.org/archive/html/qemu-devel/2021-09/msg00388.html"},{"source":"secalert@redhat.com","tags":["Third Party Advisory"],"url":"https://security.gentoo.org/glsa/202208-27"},{"source":"secalert@redhat.com","tags":["Third Party Advisory"],"url":"https://security.netapp.com/advisory/ntap-20220425-0004/"},{"source":"secalert@redhat.com","tags":["Patch","Third Party Advisory"],"url":"https://ubuntu.com/security/CVE-2021-3748"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking","Patch","Third Party Advisory"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1998514"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory"],"url":"https://github.com/qemu/qemu/commit/bedd7e93d01961fcb16a97ae45d93acf357e11f6"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Third Party Advisory"],"url":"https://lists.debian.org/debian-lts-announce/2022/04/msg00002.html"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Third Party Advisory"],"url":"https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Patch","Third Party Advisory"],"url":"https://lists.nongnu.org/archive/html/qemu-devel/2021-09/msg00388.html"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"url":"https://security.gentoo.org/glsa/202208-27"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"url":"https://security.netapp.com/advisory/ntap-20220425-0004/"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory"],"url":"https://ubuntu.com/security/CVE-2021-3748"}],"sourceIdentifier":"secalert@redhat.com","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"CWE-416"}],"source":"secalert@redhat.com","type":"Secondary"},{"description":[{"lang":"en","value":"CWE-416"}],"source":"nvd@nist.gov","type":"Primary"}]}
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