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vuln-ubuntu/data/osv/usn/USN-6410-1.json
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{
"schema_version": "1.7.0",
"id": "USN-6410-1",
"summary": "grub2-signed, grub2-unsigned vulnerabilities",
"details": "It was discovered that a specially crafted file system image could cause a\nheap-based out-of-bounds write. A local attacker could potentially use this\nto perform arbitrary code execution bypass and bypass secure boot\nprotections. (CVE-2023-4692)\n\nIt was discovered that a specially crafted file system image could cause an\nout-of-bounds read. A physically-present attacker could possibly use this\nto leak sensitive information to the GRUB pager. (CVE-2023-4693)\n",
"aliases": [],
"upstream": [
"UBUNTU-CVE-2023-4692",
"UBUNTU-CVE-2023-4693"
],
"related": [],
"published": "2023-10-04T01:31:42Z",
"modified": "2026-04-27T14:11:31Z",
"affected": [
{
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "grub2-signed",
"purl": "pkg:deb/ubuntu/grub2-signed@1.187.6~20.04.1?arch=source&distro=focal"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.187.6~20.04.1"
}
]
}
],
"versions": [
"1.128",
"1.129",
"1.130",
"1.131",
"1.133",
"1.134",
"1.135",
"1.136",
"1.137",
"1.138",
"1.139",
"1.140",
"1.141",
"1.142",
"1.142.1",
"1.142.3",
"1.142.4",
"1.142.5",
"1.142.6",
"1.142.8",
"1.142.9",
"1.142.10",
"1.142.11",
"1.167",
"1.167.2",
"1.173.2~20.04.1",
"1.173.4",
"1.187.2~20.04.2",
"1.187.3~20.04.1",
"1.187.4~20.04.1"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "grub-efi-amd64-signed",
"binary_version": "1.187.6~20.04.1+2.06-2ubuntu14.4"
},
{
"binary_name": "grub-efi-arm64-signed",
"binary_version": "1.187.6~20.04.1+2.06-2ubuntu14.4"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:20.04:LTS",
"cves": [
{
"id": "CVE-2023-4692",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2023-4693",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
]
}
}
},
{
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "grub2-signed",
"purl": "pkg:deb/ubuntu/grub2-signed@1.187.6?arch=source&distro=jammy"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.187.6"
}
]
}
],
"versions": [
"1.173",
"1.174",
"1.176",
"1.177",
"1.178",
"1.179",
"1.180",
"1.182~22.04.1",
"1.187.2",
"1.187.3~22.04.1",
"1.187.4~22.04.1"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "grub-efi-amd64-signed",
"binary_version": "1.187.6+2.06-2ubuntu14.4"
},
{
"binary_name": "grub-efi-arm64-signed",
"binary_version": "1.187.6+2.06-2ubuntu14.4"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:22.04:LTS",
"cves": [
{
"id": "CVE-2023-4692",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2023-4693",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
]
}
}
},
{
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "grub2-unsigned",
"purl": "pkg:deb/ubuntu/grub2-unsigned@2.06-2ubuntu14.4?arch=source&distro=jammy"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.06-2ubuntu14.4"
}
]
}
],
"versions": [
"2.04-1ubuntu47",
"2.04-1ubuntu48",
"2.06-2ubuntu3",
"2.06-2ubuntu4",
"2.06-2ubuntu5",
"2.06-2ubuntu6",
"2.06-2ubuntu7",
"2.06-2ubuntu10",
"2.06-2ubuntu14",
"2.06-2ubuntu14.1",
"2.06-2ubuntu14.2"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "grub-efi-amd64",
"binary_version": "2.06-2ubuntu14.4"
},
{
"binary_name": "grub-efi-amd64-bin",
"binary_version": "2.06-2ubuntu14.4"
},
{
"binary_name": "grub-efi-arm64",
"binary_version": "2.06-2ubuntu14.4"
},
{
"binary_name": "grub-efi-arm64-bin",
"binary_version": "2.06-2ubuntu14.4"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:22.04:LTS",
"cves": [
{
"id": "CVE-2023-4692",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2023-4693",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
]
}
}
}
],
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-6410-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2023-4692"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2023-4693"
}
]
}
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