{"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. Setparam_prefix() in the menu rendering code performs a length calculation on the assumption that expressing a quoted single quote will require 3 characters, while it actually requires 4 characters which allows an attacker to corrupt memory by one byte for each quote in the input. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-787", "description": "CWE-787", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2022-03-25T07:06:31", "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1926263"}, {"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-2021-20233", "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. Setparam_prefix() in the menu rendering code performs a length calculation on the assumption that expressing a quoted single quote will require 3 characters, while it actually requires 4 characters which allows an attacker to corrupt memory by one byte for each quote in the input. 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-787"}]}]}, "references": {"reference_data": [{"name": "https://bugzilla.redhat.com/show_bug.cgi?id=1926263", "refsource": "MISC", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1926263"}, {"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": "2024-08-03T17:37:22.631Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1926263"}, {"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-2021-20233", "datePublished": "2021-03-03T16:44:34", "dateReserved": "2020-12-17T00:00:00", "dateUpdated": "2024-08-03T17:37:22.631Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"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. Setparam_prefix() in the menu rendering code performs a length calculation on the assumption that expressing a quoted single quote will require 3 characters, while it actually requires 4 characters which allows an attacker to corrupt memory by one byte for each quote in the input. 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. La funci\u00f3n Setparam_prefix() en el c\u00f3digo de renderizaci\u00f3n del men\u00fa lleva a cabo un c\u00e1lculo de longitud asumiendo que expresar una comilla simple entre comillas requerir\u00e1 3 caracteres, mientras que actualmente requiere 4 caracteres, lo que permite a un atacante corromper la memoria por un byte para cada comilla en la entrada. La mayor amenaza de esta vulnerabilidad es la confidencialidad e integridad de los datos, as\u00ed como la disponibilidad del sistema"}], "id": "CVE-2021-20233", "lastModified": "2023-11-07T03:29:01.363", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 7.2, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 10.0, "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": "2021-03-03T17:15:12.037", "references": [{"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1926263"}, {"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/"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-787"}], "source": "secalert@redhat.com", "type": "Secondary"}]}

{"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: Heap out-of-bounds write due to miscalculation of space required for quoting", "id": "1926263", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1926263"}, "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-787", "details": ["A flaw was found in grub2 in versions prior to 2.06. Setparam_prefix() in the menu rendering code performs a length calculation on the assumption that expressing a quoted single quote will require 3 characters, while it actually requires 4 characters which allows an attacker to corrupt memory by one byte for each quote in the input. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.", "A flaw was found in grub2. Setparam_prefix() in the menu rendering code performs a length calculation on the assumption that expressing a quoted single quote will require 3 characters, while it actually requires 4 characters which allows an attacker to corrupt memory by one byte for each quote in the input. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability."], "name": "CVE-2021-20233", "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-2021-20233\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-20233"], "threat_severity": "Moderate", "upstream_fix": "grub 2.06"}