2 lines
4.5 KiB
JSON
2 lines
4.5 KiB
JSON
{"affected":[{"affectedData":[{"product":"qemu","vendor":"n/a","versions":[{"status":"affected","version":"vulnerable up to (including) qemu 5.2.0"}]}],"source":"secalert@redhat.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:qemu:qemu:5.2.0:-:*:*:*:*:*:*","matchCriteriaId":"9ABAD207-A430-497A-AB2C-DA7C1920FE17","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"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"A NULL pointer dereference flaw was found in the floppy disk emulator of QEMU. This issue occurs while processing read/write ioport commands if the selected floppy drive is not initialized with a block device. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability."},{"lang":"es","value":"Se encontró un fallo de desreferencia de puntero NULL en el emulador floppy disk de QEMU. Este problema ocurre mientras se procesan comandos de ioport de lectura y escritura si la unidad de disquete seleccionada no es inicializada con un dispositivo de bloque. Este fallo permite a un usuario invitado privilegiado bloquear el proceso QEMU en el host, resultando en una denegación de servicio. La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema"}],"id":"CVE-2021-20196","lastModified":"2026-06-17T03:33:27.217","metrics":{"cvssMetricV2":[{"acInsufInfo":false,"baseSeverity":"LOW","cvssData":{"accessComplexity":"LOW","accessVector":"LOCAL","authentication":"NONE","availabilityImpact":"PARTIAL","baseScore":2.1,"confidentialityImpact":"NONE","integrityImpact":"NONE","vectorString":"AV:L/AC:L/Au:N/C:N/I:N/A:P","version":"2.0"},"exploitabilityScore":3.9,"impactScore":2.9,"obtainAllPrivilege":false,"obtainOtherPrivilege":false,"obtainUserPrivilege":false,"source":"nvd@nist.gov","type":"Primary","userInteractionRequired":false}],"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","version":"3.1"},"exploitabilityScore":2.0,"impactScore":4.0,"source":"nvd@nist.gov","type":"Primary"}]},"published":"2021-05-26T22:15:07.907","references":[{"source":"secalert@redhat.com","tags":["Exploit","Patch","Third Party Advisory"],"url":"https://bugs.launchpad.net/qemu/+bug/1912780"},{"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":["Third Party Advisory"],"url":"https://security.netapp.com/advisory/ntap-20210708-0004/"},{"source":"secalert@redhat.com","tags":["Mailing List","Patch","Third Party Advisory"],"url":"https://www.openwall.com/lists/oss-security/2021/01/28/1"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Patch","Third Party Advisory"],"url":"https://bugs.launchpad.net/qemu/+bug/1912780"},{"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":["Third Party Advisory"],"url":"https://security.netapp.com/advisory/ntap-20210708-0004/"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Patch","Third Party Advisory"],"url":"https://www.openwall.com/lists/oss-security/2021/01/28/1"}],"sourceIdentifier":"secalert@redhat.com","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"CWE-476"}],"source":"secalert@redhat.com","type":"Secondary"},{"description":[{"lang":"en","value":"CWE-476"}],"source":"nvd@nist.gov","type":"Secondary"}]}
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