CVE-2020-35517

{"containers": {"cna": {"affected": [{"product": "qemu", "vendor": "n/a", "versions": [{"status": "affected", "version": "qemu 5.2.0"}]}], "descriptions": [{"lang": "en", "value": "A flaw was found in qemu. A host privilege escalation issue was found in the virtio-fs shared file system daemon where a privileged guest user is able to create a device special file in the shared directory and use it to r/w access host devices."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-269", "description": "CWE-269", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2022-08-14T19:06:06.000Z", "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://github.com/qemu/qemu/commit/ebf101955ce8f8d72fba103b5151115a4335de2c"}, {"tags": ["x_refsource_MISC"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1915823"}, {"tags": ["x_refsource_MISC"], "url": "https://www.openwall.com/lists/oss-security/2021/01/22/1"}, {"tags": ["x_refsource_MISC"], "url": "https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg05461.html"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://security.netapp.com/advisory/ntap-20210312-0002/"}, {"name": "GLSA-202208-27", "tags": ["vendor-advisory", "x_refsource_GENTOO"], "url": "https://security.gentoo.org/glsa/202208-27"}]}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T17:02:08.231Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/qemu/qemu/commit/ebf101955ce8f8d72fba103b5151115a4335de2c"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1915823"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.openwall.com/lists/oss-security/2021/01/22/1"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg05461.html"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://security.netapp.com/advisory/ntap-20210312-0002/"}, {"name": "GLSA-202208-27", "tags": ["vendor-advisory", "x_refsource_GENTOO", "x_transferred"], "url": "https://security.gentoo.org/glsa/202208-27"}]}]}, "cveMetadata": {"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "assignerShortName": "redhat", "cveId": "CVE-2020-35517", "datePublished": "2021-01-28T19:13:54.000Z", "dateReserved": "2020-12-17T00:00:00.000Z", "dateUpdated": "2024-08-04T17:02:08.231Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"affected": [{"affectedData": [{"product": "qemu", "vendor": "n/a", "versions": [{"status": "affected", "version": "qemu 5.2.0"}]}], "source": "secalert@redhat.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*", "matchCriteriaId": "01657731-34D9-471D-BCD4-D7772822C761", "versionEndIncluding": "5.2.50", "versionStartIncluding": "5.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A flaw was found in qemu. A host privilege escalation issue was found in the virtio-fs shared file system daemon where a privileged guest user is able to create a device special file in the shared directory and use it to r/w access host devices."}, {"lang": "es", "value": "Se encontr\u00f3 un fallo en qemu. Se encontr\u00f3 un problema de escalada de privilegios del host en el demonio del sistema de archivos compartidos virtio-fs, donde un usuario invitado privilegiado puede crear un archivo especial de dispositivo en el directorio compartido y usarlo para dispositivos host de acceso de r/w"}], "id": "CVE-2020-35517", "lastModified": "2026-06-17T03:13:51.057", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 4.6, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.2, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.5, "impactScore": 6.0, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-01-28T20:15:12.913", "references": [{"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1915823"}, {"source": "secalert@redhat.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/qemu/qemu/commit/ebf101955ce8f8d72fba103b5151115a4335de2c"}, {"source": "secalert@redhat.com", "tags": ["Exploit", "Mailing List", "Patch", "Third Party Advisory"], "url": "https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg05461.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-20210312-0002/"}, {"source": "secalert@redhat.com", "tags": ["Exploit", "Mailing List", "Patch", "Third Party Advisory"], "url": "https://www.openwall.com/lists/oss-security/2021/01/22/1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1915823"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/qemu/qemu/commit/ebf101955ce8f8d72fba103b5151115a4335de2c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Mailing List", "Patch", "Third Party Advisory"], "url": "https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg05461.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-20210312-0002/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Mailing List", "Patch", "Third Party Advisory"], "url": "https://www.openwall.com/lists/oss-security/2021/01/22/1"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-269"}], "source": "secalert@redhat.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-269"}], "source": "nvd@nist.gov", "type": "Secondary"}]}

{"acknowledgement": "Red Hat would like to thank Alex Xu (alxu.ca) for reporting this issue.", "affected_release": [{"advisory": "RHSA-2021:0743", "cpe": "cpe:/a:redhat:advanced_virtualization:8.2::el8", "package": "virt:8.2-8020120210211153838.863bb0db", "product_name": "Advanced Virtualization for RHEL 8.2.1", "release_date": "2021-03-08T00:00:00Z"}, {"advisory": "RHSA-2021:0743", "cpe": "cpe:/a:redhat:advanced_virtualization:8.2::el8", "package": "virt-devel:8.2-8020120210211153838.863bb0db", "product_name": "Advanced Virtualization for RHEL 8.2.1", "release_date": "2021-03-08T00:00:00Z"}, {"advisory": "RHBA-2021:0639", "cpe": "cpe:/a:redhat:advanced_virtualization:8.3::el8", "package": "virt:8.3-8030120210211160750.71132145", "product_name": "Advanced Virtualization for RHEL 8.3.1", "release_date": "2021-02-22T00:00:00Z"}, {"advisory": "RHBA-2021:0639", "cpe": "cpe:/a:redhat:advanced_virtualization:8.3::el8", "package": "virt-devel:8.3-8030120210211160750.71132145", "product_name": "Advanced Virtualization for RHEL 8.3.1", "release_date": "2021-02-22T00:00:00Z"}, {"advisory": "RHSA-2021:0711", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "virt-devel:rhel-8030020210210212009.229f0a1c", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-03-03T00:00:00Z"}, {"advisory": "RHSA-2021:0711", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "virt:rhel-8030020210210212009.229f0a1c", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-03-03T00:00:00Z"}], "bugzilla": {"description": "QEMU: virtiofsd: potential privileged host device access from guest", "id": "1915823", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1915823"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-269", "details": ["A flaw was found in qemu. A host privilege escalation issue was found in the virtio-fs shared file system daemon where a privileged guest user is able to create a device special file in the shared directory and use it to r/w access host devices.", "A flaw was found in qemu. A host privilege escalation issue was found in the virtio-fs shared file system daemon where a privileged guest user is able to create a device special file in the shared directory and use it to r/w access host devices. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability."], "name": "CVE-2020-35517", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "kvm", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "xen", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "qemu-kvm", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "qemu-kvm", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "qemu-kvm-ma", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "qemu-kvm-rhev", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/a:redhat:advanced_virtualization:8::el8", "fix_state": "Affected", "package_name": "virt:8.2/qemu-kvm", "product_name": "Red Hat Enterprise Linux 8 Advanced Virtualization"}, {"cpe": "cpe:/a:redhat:advanced_virtualization:8::el8", "fix_state": "Affected", "package_name": "virt:8.3/qemu-kvm", "product_name": "Red Hat Enterprise Linux 8 Advanced Virtualization"}], "public_date": "2021-01-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-35517\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-35517\nhttps://virtio-fs.gitlab.io/\nhttps://www.openwall.com/lists/oss-security/2021/01/22/1"], "statement": "This issue does not affect the version of the qemu-kvm package as shipped with the Red Hat Enterprise Linux 5, 6 and 7. Virtio-fs is fairly new and is not built in the Red Hat Enterprise Linux 5, 6 and 7.\nThis issue affects the version of the qemu-kvm package as shipped with the Red Hat Enterprise Linux 8. Future qemu-kvm package updates for Red Hat Enterprise Linux 8 may address this issue.", "threat_severity": "Important"}

{}