{ "id": "CVE-2021-4203", "sourceIdentifier": "secalert@redhat.com", "published": "2022-03-25T19:15:09.833", "lastModified": "2022-12-08T22:19:30.060", "vulnStatus": "Analyzed", "descriptions": [ { "lang": "en", "value": "A use-after-free read flaw was found in sock_getsockopt() in net/core/sock.c due to SO_PEERCRED and SO_PEERGROUPS race with listen() (and connect()) in the Linux kernel. In this flaw, an attacker with a user privileges may crash the system or leak internal kernel information." }, { "lang": "es", "value": "Se ha encontrado un fallo de lectura de uso de memoria previamente liberada en la funci\u00f3n sock_getsockopt() en el archivo net/core/sock.c debido a la carrera de SO_PEERCRED y SO_PEERGROUPS con listen() (y connect()) en el kernel de Linux. En este fallo, un atacante con privilegios de usuario puede bloquear el sistema o filtrar informaci\u00f3n interna del kernel" } ], "metrics": { "cvssMetricV31": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseScore": 6.8, "baseSeverity": "MEDIUM" }, "exploitabilityScore": 1.6, "impactScore": 5.2 } ], "cvssMetricV2": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "2.0", "vectorString": "AV:N/AC:M/Au:S/C:P/I:N/A:P", "accessVector": "NETWORK", "accessComplexity": "MEDIUM", "authentication": "SINGLE", "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 4.9 }, "baseSeverity": "MEDIUM", 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"matchCriteriaId": "7A6D77C7-A2F4-4700-AB5A-3EC853496ECA" } ] } ] } ], "references": [ { "url": "https://bugs.chromium.org/p/project-zero/issues/detail?id=2230&can=7&q=modified-after%3Atoday-30&sort=-modified&colspec=ID%20Type%20Status%20Priority%20Milestone%20Owner%20Summary%20Modified%20Cve&cells=tiles&redir=1", "source": "secalert@redhat.com", "tags": [ "Exploit", "Issue Tracking", "Patch", "Third Party Advisory" ] }, { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2036934", "source": "secalert@redhat.com", "tags": [ "Issue Tracking", "Patch", "Third Party Advisory" ] }, { "url": "https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=35306eb23814", "source": "secalert@redhat.com", "tags": [ "Patch", "Vendor Advisory" ] }, { "url": "https://lore.kernel.org/netdev/20210929225750.2548112-1-eric.dumazet@gmail.com/T/", "source": "secalert@redhat.com", "tags": [ "Mailing List", "Patch", "Vendor Advisory" ] }, { "url": "https://security.netapp.com/advisory/ntap-20221111-0003/", "source": "secalert@redhat.com", "tags": [ "Third Party Advisory" ] }, { "url": "https://www.oracle.com/security-alerts/cpujul2022.html", "source": "secalert@redhat.com", "tags": [ "Patch", "Third Party Advisory" ] } ] }