CVE-2020-14309

{"containers": {"cna": {"affected": [{"product": "Grub", "vendor": "n/a", "versions": [{"status": "affected", "version": "All grub2 versions before 2.06"}]}], "descriptions": [{"lang": "en", "value": "There's an issue with grub2 in all versions before 2.06 when handling squashfs filesystems containing a symbolic link with name length of UINT32 bytes in size. The name size leads to an arithmetic overflow leading to a zero-size allocation further causing a heap-based buffer overflow with attacker controlled data."}], "problemTypes": [{"descriptions": [{"description": "Integer Overflow or Wraparound leading to Heap-based Buffer Overflow", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2021-05-01T01:08:04.000Z", "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1852022"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://security.netapp.com/advisory/ntap-20200731-0008/"}, {"name": "USN-4432-1", "tags": ["vendor-advisory", "x_refsource_UBUNTU"], "url": "https://usn.ubuntu.com/4432-1/"}, {"name": "openSUSE-SU-2020:1169", "tags": ["vendor-advisory", "x_refsource_SUSE"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html"}, {"name": "openSUSE-SU-2020:1168", "tags": ["vendor-advisory", "x_refsource_SUSE"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html"}, {"name": "GLSA-202104-05", "tags": ["vendor-advisory", "x_refsource_GENTOO"], "url": "https://security.gentoo.org/glsa/202104-05"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "secalert@redhat.com", "ID": "CVE-2020-14309", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Grub", "version": {"version_data": [{"version_value": "All grub2 versions before 2.06"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "There's an issue with grub2 in all versions before 2.06 when handling squashfs filesystems containing a symbolic link with name length of UINT32 bytes in size. The name size leads to an arithmetic overflow leading to a zero-size allocation further causing a heap-based buffer overflow with attacker controlled data."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Integer Overflow or Wraparound leading to Heap-based Buffer Overflow"}]}]}, "references": {"reference_data": [{"name": "https://bugzilla.redhat.com/show_bug.cgi?id=1852022", "refsource": "MISC", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1852022"}, {"name": "https://security.netapp.com/advisory/ntap-20200731-0008/", "refsource": "CONFIRM", "url": "https://security.netapp.com/advisory/ntap-20200731-0008/"}, {"name": "USN-4432-1", "refsource": "UBUNTU", "url": "https://usn.ubuntu.com/4432-1/"}, {"name": "openSUSE-SU-2020:1169", "refsource": "SUSE", "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html"}, {"name": "openSUSE-SU-2020:1168", "refsource": "SUSE", "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html"}, {"name": "GLSA-202104-05", "refsource": "GENTOO", "url": "https://security.gentoo.org/glsa/202104-05"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T12:39:36.530Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1852022"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://security.netapp.com/advisory/ntap-20200731-0008/"}, {"name": "USN-4432-1", "tags": ["vendor-advisory", "x_refsource_UBUNTU", "x_transferred"], "url": "https://usn.ubuntu.com/4432-1/"}, {"name": "openSUSE-SU-2020:1169", "tags": ["vendor-advisory", "x_refsource_SUSE", "x_transferred"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html"}, {"name": "openSUSE-SU-2020:1168", "tags": ["vendor-advisory", "x_refsource_SUSE", "x_transferred"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html"}, {"name": "GLSA-202104-05", "tags": ["vendor-advisory", "x_refsource_GENTOO", "x_transferred"], "url": "https://security.gentoo.org/glsa/202104-05"}]}]}, "cveMetadata": {"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "assignerShortName": "redhat", "cveId": "CVE-2020-14309", "datePublished": "2020-07-30T12:49:31.000Z", "dateReserved": "2020-06-17T00:00:00.000Z", "dateUpdated": "2024-08-04T12:39:36.530Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"affected": [{"affectedData": [{"product": "Grub", "vendor": "n/a", "versions": [{"status": "affected", "version": "All grub2 versions before 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:opensuse:leap:15.1:*:*:*:*:*:*:*", "matchCriteriaId": "B620311B-34A3-48A6-82DF-6F078D7A4493", "vulnerable": true}, {"criteria": "cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*", "matchCriteriaId": "B009C22E-30A4-4288-BCF6-C3E81DEAF45A", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "There's an issue with grub2 in all versions before 2.06 when handling squashfs filesystems containing a symbolic link with name length of UINT32 bytes in size. The name size leads to an arithmetic overflow leading to a zero-size allocation further causing a heap-based buffer overflow with attacker controlled data."}, {"lang": "es", "value": "Se presenta un problema con grub2 en todas las versiones anteriores a 2.06, cuando se manejan sistemas de archivos squashfs que contienen un enlace simb\u00f3lico con una longitud de nombre de UINT32 bytes de tama\u00f1o. El tama\u00f1o del nombre conlleva a un desbordamiento aritm\u00e9tico conllevando a una asignaci\u00f3n de tama\u00f1o cero, causando un desbordamiento del b\u00fafer en la regi\u00f3n heap de la memoria con datos controlados por el atacante"}], "id": "CVE-2020-14309", "lastModified": "2026-06-17T02:54:30.627", "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": 6.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 0.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-07-30T13:15:10.987", "references": [{"source": "secalert@redhat.com", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html"}, {"source": "secalert@redhat.com", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html"}, {"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1852022"}, {"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-20200731-0008/"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://usn.ubuntu.com/4432-1/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1852022"}, {"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-20200731-0008/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://usn.ubuntu.com/4432-1/"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-190"}, {"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank Chris Coulson (Ubuntu Security Team) for reporting this issue.", "affected_release": [{"advisory": "RHSA-2020:3217", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "fwupdate-0:12-6.el7_8", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2020-07-29T00:00:00Z"}, {"advisory": "RHSA-2020:3217", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "grub2-1:2.02-0.86.el7_8", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2020-07-29T00:00:00Z"}, {"advisory": "RHSA-2020:3217", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "shim-0:15-7.el7_9", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2020-07-29T00:00:00Z"}, {"advisory": "RHSA-2020:3217", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "shim-signed-0:15-7.el7_8", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2020-07-29T00:00:00Z"}, {"advisory": "RHSA-2020:3273", "cpe": "cpe:/o:redhat:rhel_aus:7.2", "package": "grub2-1:2.02-0.86.el7_2", "product_name": "Red Hat Enterprise Linux 7.2 Advanced Update Support", "release_date": "2020-08-03T00:00:00Z"}, {"advisory": "RHSA-2020:3273", "cpe": "cpe:/o:redhat:rhel_aus:7.2", "package": "shim-0:15-8.el7", "product_name": "Red Hat Enterprise Linux 7.2 Advanced Update Support", "release_date": "2020-08-03T00:00:00Z"}, {"advisory": "RHSA-2020:3273", "cpe": "cpe:/o:redhat:rhel_aus:7.2", "package": "shim-signed-0:15-8.el7_2", "product_name": "Red Hat Enterprise Linux 7.2 Advanced Update Support", "release_date": "2020-08-03T00:00:00Z"}, {"advisory": "RHSA-2020:3276", "cpe": "cpe:/o:redhat:rhel_aus:7.3", "package": "grub2-1:2.02-0.86.el7", "product_name": "Red Hat Enterprise Linux 7.3 Advanced Update Support", "release_date": "2020-08-03T00:00:00Z"}, {"advisory": "RHSA-2020:3276", "cpe": "cpe:/o:redhat:rhel_aus:7.3", "package": "shim-0:15-8.el7", "product_name": "Red Hat Enterprise Linux 7.3 Advanced Update Support", "release_date": "2020-08-03T00:00:00Z"}, {"advisory": "RHSA-2020:3276", "cpe": "cpe:/o:redhat:rhel_aus:7.3", "package": "shim-signed-0:15-8.el7_3", "product_name": "Red Hat Enterprise Linux 7.3 Advanced Update Support", "release_date": "2020-08-03T00:00:00Z"}, {"advisory": "RHSA-2020:3276", "cpe": "cpe:/o:redhat:rhel_tus:7.3", "package": "grub2-1:2.02-0.86.el7", "product_name": "Red Hat Enterprise Linux 7.3 Telco Extended Update Support", "release_date": "2020-08-03T00:00:00Z"}, {"advisory": "RHSA-2020:3276", "cpe": "cpe:/o:redhat:rhel_tus:7.3", "package": "shim-0:15-8.el7", "product_name": "Red Hat Enterprise Linux 7.3 Telco Extended Update Support", "release_date": "2020-08-03T00:00:00Z"}, {"advisory": "RHSA-2020:3276", "cpe": "cpe:/o:redhat:rhel_tus:7.3", "package": "shim-signed-0:15-8.el7_3", "product_name": "Red Hat Enterprise Linux 7.3 Telco Extended Update Support", "release_date": "2020-08-03T00:00:00Z"}, {"advisory": "RHSA-2020:3276", "cpe": "cpe:/o:redhat:rhel_e4s:7.3", "package": "grub2-1:2.02-0.86.el7", "product_name": "Red Hat Enterprise Linux 7.3 Update Services for SAP Solutions", "release_date": "2020-08-03T00:00:00Z"}, {"advisory": "RHSA-2020:3276", "cpe": "cpe:/o:redhat:rhel_e4s:7.3", "package": "shim-0:15-8.el7", "product_name": "Red Hat Enterprise Linux 7.3 Update Services for SAP Solutions", "release_date": "2020-08-03T00:00:00Z"}, {"advisory": "RHSA-2020:3276", "cpe": "cpe:/o:redhat:rhel_e4s:7.3", "package": "shim-signed-0:15-8.el7_3", "product_name": "Red Hat Enterprise Linux 7.3 Update Services for SAP Solutions", "release_date": "2020-08-03T00:00:00Z"}, {"advisory": "RHSA-2020:3275", "cpe": "cpe:/o:redhat:rhel_aus:7.4", "package": "fwupdate-0:9-10.el7_4", "product_name": "Red Hat Enterprise Linux 7.4 Advanced Update Support", "release_date": "2020-08-03T00:00:00Z"}, {"advisory": "RHSA-2020:3275", "cpe": "cpe:/o:redhat:rhel_aus:7.4", "package": "grub2-1:2.02-0.86.el7_4", "product_name": "Red Hat Enterprise Linux 7.4 Advanced Update Support", "release_date": "2020-08-03T00:00:00Z"}, {"advisory": "RHSA-2020:3275", "cpe": "cpe:/o:redhat:rhel_aus:7.4", "package": "shim-0:15-8.el7", "product_name": "Red Hat Enterprise Linux 7.4 Advanced Update Support", "release_date": "2020-08-03T00:00:00Z"}, {"advisory": "RHSA-2020:3275", "cpe": "cpe:/o:redhat:rhel_aus:7.4", "package": "shim-signed-0:15-8.el7_4", "product_name": "Red Hat Enterprise Linux 7.4 Advanced Update Support", "release_date": "2020-08-03T00:00:00Z"}, {"advisory": "RHSA-2020:3275", "cpe": "cpe:/o:redhat:rhel_tus:7.4", "package": "fwupdate-0:9-10.el7_4", "product_name": "Red Hat Enterprise Linux 7.4 Telco Extended Update Support", "release_date": "2020-08-03T00:00:00Z"}, {"advisory": "RHSA-2020:3275", "cpe": "cpe:/o:redhat:rhel_tus:7.4", "package": "grub2-1:2.02-0.86.el7_4", "product_name": "Red Hat Enterprise Linux 7.4 Telco Extended Update Support", "release_date": "2020-08-03T00:00:00Z"}, {"advisory": "RHSA-2020:3275", "cpe": "cpe:/o:redhat:rhel_tus:7.4", "package": "shim-0:15-8.el7", "product_name": "Red Hat Enterprise Linux 7.4 Telco Extended Update Support", "release_date": "2020-08-03T00:00:00Z"}, {"advisory": "RHSA-2020:3275", "cpe": "cpe:/o:redhat:rhel_tus:7.4", "package": "shim-signed-0:15-8.el7_4", "product_name": "Red Hat Enterprise Linux 7.4 Telco Extended Update Support", "release_date": "2020-08-03T00:00:00Z"}, {"advisory": "RHSA-2020:3275", "cpe": "cpe:/o:redhat:rhel_e4s:7.4", "package": "fwupdate-0:9-10.el7_4", "product_name": "Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions", "release_date": "2020-08-03T00:00:00Z"}, {"advisory": "RHSA-2020:3275", "cpe": "cpe:/o:redhat:rhel_e4s:7.4", "package": "grub2-1:2.02-0.86.el7_4", "product_name": "Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions", "release_date": "2020-08-03T00:00:00Z"}, {"advisory": "RHSA-2020:3275", "cpe": "cpe:/o:redhat:rhel_e4s:7.4", "package": "shim-0:15-8.el7", "product_name": "Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions", 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"2020-08-03T00:00:00Z"}, {"advisory": "RHSA-2020:3216", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "fwupd-0:1.1.4-7.el8_2", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-07-29T00:00:00Z"}, {"advisory": "RHSA-2020:3216", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "grub2-1:2.02-87.el8_2", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-07-29T00:00:00Z"}, {"advisory": "RHSA-2020:3216", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "shim-0:15-14.el8_2", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-07-29T00:00:00Z"}, {"advisory": "RHSA-2020:3216", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "shim-unsigned-x64-0:15-7.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-07-29T00:00:00Z"}, {"advisory": "RHSA-2020:3227", "cpe": "cpe:/o:redhat:rhel_e4s:8.0", "package": "fwupd-0:1.1.4-2.el8_0", "product_name": "Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions", "release_date": "2020-07-29T00:00:00Z"}, {"advisory": "RHSA-2020:3227", "cpe": "cpe:/o:redhat:rhel_e4s:8.0", "package": "grub2-1:2.02-87.el8_0", "product_name": "Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions", "release_date": "2020-07-29T00:00:00Z"}, {"advisory": "RHSA-2020:3227", "cpe": "cpe:/o:redhat:rhel_e4s:8.0", "package": "shim-0:15-14.el8_0", "product_name": "Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions", "release_date": "2020-07-29T00:00:00Z"}, {"advisory": "RHSA-2020:3223", "cpe": "cpe:/o:redhat:rhel_eus:8.1", "package": "fwupd-0:1.1.4-2.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2020-07-29T00:00:00Z"}, {"advisory": "RHSA-2020:3223", "cpe": "cpe:/o:redhat:rhel_eus:8.1", "package": "grub2-1:2.02-87.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2020-07-29T00:00:00Z"}, {"advisory": "RHSA-2020:3223", "cpe": "cpe:/o:redhat:rhel_eus:8.1", "package": "shim-0:15-14.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2020-07-29T00:00:00Z"}, {"advisory": "RHSA-2020:3223", "cpe": "cpe:/o:redhat:rhel_eus:8.1", "package": "shim-unsigned-x64-0:15-7.el8", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2020-07-29T00:00:00Z"}], "bugzilla": {"description": "grub2: Integer overflow in grub_squash_read_symlink may lead to heap-based buffer overflow", "id": "1852022", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1852022"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-190->CWE-122", "details": ["There's an issue with grub2 in all versions before 2.06 when handling squashfs filesystems containing a symbolic link with name length of UINT32 bytes in size. The name size leads to an arithmetic overflow leading to a zero-size allocation further causing a heap-based buffer overflow with attacker controlled data.", "A flaw was found in grub2. When handling squashfs filesystems containing a symbolic link with name length of UINT32 bytes in size, the name size leads to an arithmetic overflow leading to a zero-size allocation further causing a heap-based buffer overflow with attacker controlled data. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability."], "name": "CVE-2020-14309", "public_date": "2020-07-29T17:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-14309\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-14309"], "threat_severity": "Moderate"}

{}