CVE-2020-27779

{"containers": {"cna": {"affected": [{"product": "grub2", "vendor": "n/a", "versions": [{"status": "affected", "version": "grub 2.06"}]}], "descriptions": [{"lang": "en", "value": "A flaw was found in grub2 in versions prior to 2.06. The cutmem command does not honor secure boot locking allowing an privileged attacker to remove address ranges from memory creating an opportunity to circumvent SecureBoot protections after proper triage about grub's memory layout. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-285", "description": "CWE-285", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2022-03-25T07:06:28.000Z", "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1900698"}, {"name": "FEDORA-2021-cab258a413", "tags": ["vendor-advisory", "x_refsource_FEDORA"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/"}, {"name": "GLSA-202104-05", "tags": ["vendor-advisory", "x_refsource_GENTOO"], "url": "https://security.gentoo.org/glsa/202104-05"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://security.netapp.com/advisory/ntap-20220325-0001/"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "secalert@redhat.com", "ID": "CVE-2020-27779", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "grub2", "version": {"version_data": [{"version_value": "grub 2.06"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "A flaw was found in grub2 in versions prior to 2.06. The cutmem command does not honor secure boot locking allowing an privileged attacker to remove address ranges from memory creating an opportunity to circumvent SecureBoot protections after proper triage about grub's memory layout. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-285"}]}]}, "references": {"reference_data": [{"name": "https://bugzilla.redhat.com/show_bug.cgi?id=1900698", "refsource": "MISC", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1900698"}, {"name": "FEDORA-2021-cab258a413", "refsource": "FEDORA", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/"}, {"name": "GLSA-202104-05", "refsource": "GENTOO", "url": "https://security.gentoo.org/glsa/202104-05"}, {"name": "https://security.netapp.com/advisory/ntap-20220325-0001/", "refsource": "CONFIRM", "url": "https://security.netapp.com/advisory/ntap-20220325-0001/"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T16:25:42.468Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1900698"}, {"name": "FEDORA-2021-cab258a413", "tags": ["vendor-advisory", "x_refsource_FEDORA", "x_transferred"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/"}, {"name": "GLSA-202104-05", "tags": ["vendor-advisory", "x_refsource_GENTOO", "x_transferred"], "url": "https://security.gentoo.org/glsa/202104-05"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://security.netapp.com/advisory/ntap-20220325-0001/"}]}]}, "cveMetadata": {"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "assignerShortName": "redhat", "cveId": "CVE-2020-27779", "datePublished": "2021-03-03T16:40:24.000Z", "dateReserved": "2020-10-27T00:00:00.000Z", "dateUpdated": "2024-08-04T16:25:42.468Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"affected": [{"affectedData": [{"product": "grub2", "vendor": "n/a", "versions": [{"status": "affected", "version": "grub 2.06"}]}], "source": "secalert@redhat.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:*", "matchCriteriaId": "01F8D62F-70BB-4718-A095-D68540C17EEA", "versionEndExcluding": "2.06", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*", "matchCriteriaId": "142AD0DD-4CF3-4D74-9442-459CE3347E3A", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*", "matchCriteriaId": "F4CFF558-3C47-480D-A2F0-BABF26042943", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.2:*:*:*:*:*:*:*", "matchCriteriaId": "1C8D871B-AEA1-4407-AEE3-47EC782250FF", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:*", "matchCriteriaId": "98381E61-F082-4302-B51F-5648884F998B", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*", "matchCriteriaId": "D99A687E-EAE6-417E-A88E-D0082BC194CD", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*", "matchCriteriaId": "B353CE99-D57C-465B-AAB0-73EF581127D1", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.7:*:*:*:*:*:*:*", "matchCriteriaId": "7431ABC1-9252-419E-8CC1-311B41360078", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:*", "matchCriteriaId": "6897676D-53F9-45B3-B27F-7FF9A4C58D33", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*", "matchCriteriaId": "BF77CDCF-B9C9-427D-B2BF-36650FB2148C", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_eus:7.7:*:*:*:*:*:*:*", "matchCriteriaId": "21690BAC-2129-4A33-9B48-1F3BF30072A9", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_eus:8.1:*:*:*:*:*:*:*", "matchCriteriaId": "F2FF6D89-9361-45B9-ABCC-1A5E600BD63C", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_tus:7.4:*:*:*:*:*:*:*", "matchCriteriaId": "D5F7E11E-FB34-4467-8919-2B6BEAABF665", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*", "matchCriteriaId": "B76AA310-FEC7-497F-AF04-C3EC1E76C4CC", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_tus:7.7:*:*:*:*:*:*:*", "matchCriteriaId": "17F256A9-D3B9-4C72-B013-4EFD878BFEA8", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:*", "matchCriteriaId": "B09ACF2D-D83F-4A86-8185-9569605D8EE1", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*", "matchCriteriaId": "825ECE2D-E232-46E0-A047-074B34DB1E97", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*", "matchCriteriaId": "E460AA51-FCDA-46B9-AE97-E6676AA5E194", "vulnerable": true}, {"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:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*", "matchCriteriaId": "E7CF3019-975D-40BB-A8A4-894E62BD3797", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A flaw was found in grub2 in versions prior to 2.06. The cutmem command does not honor secure boot locking allowing an privileged attacker to remove address ranges from memory creating an opportunity to circumvent SecureBoot protections after proper triage about grub's memory layout. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability."}, {"lang": "es", "value": "Se encontr\u00f3 un fallo en grub2 en versiones anteriores a 2.06. El comando cutmem no respeta el bloqueo de secure boot, permitiendo a un atacante privilegiado eliminar rangos de direcciones de la memoria, creando una oportunidad para omitir unas protecciones de SecureBoot despu\u00e9s de una clasificaci\u00f3n apropiada sobre el dise\u00f1o de la memoria de grub. La mayor amenaza de esta vulnerabilidad es la confidencialidad e integridad de los datos, as\u00ed como la disponibilidad del sistema"}], "id": "CVE-2020-27779", "lastModified": "2026-06-17T03:09:37.693", "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": "2021-03-03T17:15:11.847", "references": [{"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1900698"}, {"source": "secalert@redhat.com", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202104-05"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20220325-0001/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1900698"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202104-05"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20220325-0001/"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-285"}], "source": "secalert@redhat.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "NVD-CWE-Other"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2021:0699", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "grub2-1:2.02-0.87.el7_9.2", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2021-03-02T00:00:00Z"}, {"advisory": "RHSA-2021:0704", "cpe": "cpe:/o:redhat:rhel_aus:7.2", "package": "grub2-1:2.02-0.86.el7_2.2", "product_name": "Red Hat Enterprise Linux 7.2 Advanced Update Support", "release_date": "2021-03-02T00:00:00Z"}, {"advisory": "RHSA-2021:0703", "cpe": "cpe:/o:redhat:rhel_aus:7.3", "package": "grub2-1:2.02-0.86.el7_3.2", "product_name": "Red Hat Enterprise Linux 7.3 Advanced Update Support", "release_date": "2021-03-02T00:00:00Z"}, {"advisory": "RHSA-2021:0702", "cpe": "cpe:/o:redhat:rhel_aus:7.4", "package": "grub2-1:2.02-0.86.el7_4.2", "product_name": "Red Hat Enterprise Linux 7.4 Advanced Update Support", "release_date": "2021-03-02T00:00:00Z"}, {"advisory": "RHSA-2021:0702", "cpe": "cpe:/o:redhat:rhel_tus:7.4", "package": "grub2-1:2.02-0.86.el7_4.2", "product_name": "Red Hat Enterprise Linux 7.4 Telco Extended Update Support", "release_date": "2021-03-02T00:00:00Z"}, {"advisory": "RHSA-2021:0702", "cpe": "cpe:/o:redhat:rhel_e4s:7.4", "package": "grub2-1:2.02-0.86.el7_4.2", "product_name": "Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions", "release_date": "2021-03-02T00:00:00Z"}, {"advisory": "RHSA-2021:0701", "cpe": "cpe:/o:redhat:rhel_eus:7.6", "package": "grub2-1:2.02-0.86.el7_6.3", "product_name": "Red Hat Enterprise Linux 7.6 Extended Update Support", "release_date": "2021-03-02T00:00:00Z"}, {"advisory": "RHSA-2021:0700", "cpe": "cpe:/o:redhat:rhel_eus:7.7", "package": "grub2-1:2.02-0.86.el7_7.3", "product_name": "Red Hat Enterprise Linux 7.7 Extended Update Support", "release_date": "2021-03-02T00:00:00Z"}, {"advisory": "RHSA-2021:0696", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "grub2-1:2.02-90.el8_3.1", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-03-02T00:00:00Z"}, {"advisory": "RHSA-2021:1734", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "shim-0:15.4-2.el8_1", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-05-18T00:00:00Z"}, {"advisory": "RHSA-2021:1734", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "shim-unsigned-aarch64-0:15-7.el8_1", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-05-18T00:00:00Z"}, {"advisory": "RHSA-2021:1734", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "shim-unsigned-x64-0:15.4-4.el8_1", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-05-18T00:00:00Z"}, {"advisory": "RHSA-2021:2566", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "fwupd-0:1.5.9-1.el8_4", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-06-29T00:00:00Z"}, {"advisory": "RHSA-2021:0698", "cpe": "cpe:/o:redhat:rhel_eus:8.1", "package": "grub2-1:2.02-87.el8_1.2", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2021-03-02T00:00:00Z"}, {"advisory": "RHSA-2021:3675", "cpe": "cpe:/o:redhat:rhel_eus:8.1", "package": "fwupd-0:1.1.4-4.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2021-09-28T00:00:00Z"}, {"advisory": "RHSA-2021:3675", "cpe": "cpe:/o:redhat:rhel_eus:8.1", "package": "shim-0:15.4-2.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2021-09-28T00:00:00Z"}, {"advisory": "RHSA-2021:3675", "cpe": "cpe:/o:redhat:rhel_eus:8.1", "package": "shim-unsigned-aarch64-0:15-7.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2021-09-28T00:00:00Z"}, {"advisory": "RHSA-2021:3675", "cpe": "cpe:/o:redhat:rhel_eus:8.1", "package": "shim-unsigned-x64-0:15.4-4.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2021-09-28T00:00:00Z"}, {"advisory": "RHSA-2021:0697", "cpe": "cpe:/o:redhat:rhel_eus:8.2", "package": "grub2-1:2.02-87.el8_2.3", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2021-03-02T00:00:00Z"}, {"advisory": "RHSA-2021:2790", "cpe": "cpe:/o:redhat:rhel_eus:8.2", "package": "fwupd-0:1.1.4-9.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2021-07-20T00:00:00Z"}, {"advisory": "RHSA-2021:2790", "cpe": "cpe:/o:redhat:rhel_eus:8.2", "package": "shim-0:15.4-2.el8_1", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2021-07-20T00:00:00Z"}, {"advisory": "RHSA-2021:2790", "cpe": "cpe:/o:redhat:rhel_eus:8.2", "package": "shim-unsigned-aarch64-0:15-7.el8_1", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2021-07-20T00:00:00Z"}, {"advisory": "RHSA-2021:2790", "cpe": "cpe:/o:redhat:rhel_eus:8.2", "package": "shim-unsigned-x64-0:15.4-4.el8_1", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2021-07-20T00:00:00Z"}], "bugzilla": {"description": "grub2: cutmem command allows privileged user to remove memory regions when Secure Boot is enabled", "id": "1900698", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1900698"}, "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-285", "details": ["A flaw was found in grub2 in versions prior to 2.06. The cutmem command does not honor secure boot locking allowing an privileged attacker to remove address ranges from memory creating an opportunity to circumvent SecureBoot protections after proper triage about grub's memory layout. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.", "A flaw was found in grub2. The cutmem command does not honor secure boot locking allowing an privileged attacker to remove address ranges from memory creating an opportunity to circumvent SecureBoot protections after proper triage about grub's memory layout. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability."], "name": "CVE-2020-27779", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "fwupd", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "fwupdate", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "shim", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2021-03-02T18:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-27779\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-27779"], "threat_severity": "Moderate"}

{}