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vuln-ubuntu/data/osv/usn/USN-4432-2.json
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{
"schema_version": "1.7.0",
"id": "USN-4432-2",
"summary": "grub2, grub2-signed regression",
"details": "USN-4432-1 fixed vulnerabilities in GRUB2 affecting Secure Boot\nenvironments. Unfortunately, the update introduced regressions for\nsome BIOS systems (either pre-UEFI or UEFI configured in Legacy mode),\npreventing them from successfully booting. This update addresses\nthe issue.\n\nUsers with BIOS systems that installed GRUB2 versions from USN-4432-1\nshould verify that their GRUB2 installation has a correct understanding\nof their boot device location and installed the boot loader correctly.\n\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\n Jesse Michael and Mickey Shkatov discovered that the configuration parser\n in GRUB2 did not properly exit when errors were discovered, resulting in\n heap-based buffer overflows. A local attacker could use this to execute\n arbitrary code and bypass UEFI Secure Boot restrictions. (CVE-2020-10713)\n\n Chris Coulson discovered that the GRUB2 function handling code did not\n properly handle a function being redefined, leading to a use-after-free\n vulnerability. A local attacker could use this to execute arbitrary code\n and bypass UEFI Secure Boot restrictions. (CVE-2020-15706)\n\n Chris Coulson discovered that multiple integer overflows existed in GRUB2\n when handling certain filesystems or font files, leading to heap-based\n buffer overflows. A local attacker could use these to execute arbitrary\n code and bypass UEFI Secure Boot restrictions. (CVE-2020-14309,\n CVE-2020-14310, CVE-2020-14311)\n\n It was discovered that the memory allocator for GRUB2 did not validate\n allocation size, resulting in multiple integer overflows and heap-based\n buffer overflows when handling certain filesystems, PNG images or disk\n metadata. A local attacker could use this to execute arbitrary code and\n bypass UEFI Secure Boot restrictions. (CVE-2020-14308)\n\n Mathieu Trudel-Lapierre discovered that in certain situations, GRUB2\n failed to validate kernel signatures. A local attacker could use this\n to bypass Secure Boot restrictions. (CVE-2020-15705)\n\n Colin Watson and Chris Coulson discovered that an integer overflow\n existed in GRUB2 when handling the initrd command, leading to a heap-based\n buffer overflow. A local attacker could use this to execute arbitrary code\n and bypass UEFI Secure Boot restrictions. (CVE-2020-15707)\n",
"aliases": [],
"upstream": [],
"related": [],
"published": "2020-08-04T23:54:15Z",
"modified": "2026-06-29T10:52:46Z",
"affected": [
{
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "grub2",
"purl": "pkg:deb/ubuntu/grub2@2.02~beta2-9ubuntu1.21?arch=source&distro=trusty/esm"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.02~beta2-9ubuntu1.21"
}
]
}
],
"versions": [
"2.00-19ubuntu2",
"2.00-19ubuntu3",
"2.00-19ubuntu4",
"2.00-20",
"2.00-21",
"2.00-22",
"2.02~beta2-5",
"2.02~beta2-6",
"2.02~beta2-7",
"2.02~beta2-8",
"2.02~beta2-9",
"2.02~beta2-9ubuntu1",
"2.02~beta2-9ubuntu1.1",
"2.02~beta2-9ubuntu1.2",
"2.02~beta2-9ubuntu1.3",
"2.02~beta2-9ubuntu1.4",
"2.02~beta2-9ubuntu1.5",
"2.02~beta2-9ubuntu1.6",
"2.02~beta2-9ubuntu1.7",
"2.02~beta2-9ubuntu1.8",
"2.02~beta2-9ubuntu1.11",
"2.02~beta2-9ubuntu1.12",
"2.02~beta2-9ubuntu1.14",
"2.02~beta2-9ubuntu1.15",
"2.02~beta2-9ubuntu1.16",
"2.02~beta2-9ubuntu1.17",
"2.02~beta2-9ubuntu1.20"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "grub-common",
"binary_version": "2.02~beta2-9ubuntu1.21"
},
{
"binary_name": "grub-coreboot",
"binary_version": "2.02~beta2-9ubuntu1.21"
},
{
"binary_name": "grub-coreboot-bin",
"binary_version": "2.02~beta2-9ubuntu1.21"
},
{
"binary_name": "grub-efi",
"binary_version": "2.02~beta2-9ubuntu1.21"
},
{
"binary_name": "grub-efi-amd64",
"binary_version": "2.02~beta2-9ubuntu1.21"
},
{
"binary_name": "grub-efi-amd64-bin",
"binary_version": "2.02~beta2-9ubuntu1.21"
},
{
"binary_name": "grub-efi-arm",
"binary_version": "2.02~beta2-9ubuntu1.21"
},
{
"binary_name": "grub-efi-arm-bin",
"binary_version": "2.02~beta2-9ubuntu1.21"
},
{
"binary_name": "grub-efi-arm64",
"binary_version": "2.02~beta2-9ubuntu1.21"
},
{
"binary_name": "grub-efi-arm64-bin",
"binary_version": "2.02~beta2-9ubuntu1.21"
},
{
"binary_name": "grub-efi-ia32",
"binary_version": "2.02~beta2-9ubuntu1.21"
},
{
"binary_name": "grub-efi-ia32-bin",
"binary_version": "2.02~beta2-9ubuntu1.21"
},
{
"binary_name": "grub-emu",
"binary_version": "2.02~beta2-9ubuntu1.21"
},
{
"binary_name": "grub-firmware-qemu",
"binary_version": "2.02~beta2-9ubuntu1.21"
},
{
"binary_name": "grub-ieee1275",
"binary_version": "2.02~beta2-9ubuntu1.21"
},
{
"binary_name": "grub-ieee1275-bin",
"binary_version": "2.02~beta2-9ubuntu1.21"
},
{
"binary_name": "grub-linuxbios",
"binary_version": "2.02~beta2-9ubuntu1.21"
},
{
"binary_name": "grub-pc",
"binary_version": "2.02~beta2-9ubuntu1.21"
},
{
"binary_name": "grub-pc-bin",
"binary_version": "2.02~beta2-9ubuntu1.21"
},
{
"binary_name": "grub-rescue-pc",
"binary_version": "2.02~beta2-9ubuntu1.21"
},
{
"binary_name": "grub-theme-starfield",
"binary_version": "2.02~beta2-9ubuntu1.21"
},
{
"binary_name": "grub-uboot",
"binary_version": "2.02~beta2-9ubuntu1.21"
},
{
"binary_name": "grub-uboot-bin",
"binary_version": "2.02~beta2-9ubuntu1.21"
},
{
"binary_name": "grub-xen",
"binary_version": "2.02~beta2-9ubuntu1.21"
},
{
"binary_name": "grub-xen-bin",
"binary_version": "2.02~beta2-9ubuntu1.21"
},
{
"binary_name": "grub2",
"binary_version": "2.02~beta2-9ubuntu1.21"
},
{
"binary_name": "grub2-common",
"binary_version": "2.02~beta2-9ubuntu1.21"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"cves": []
}
}
},
{
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "grub2-signed",
"purl": "pkg:deb/ubuntu/grub2-signed@1.34.24?arch=source&distro=trusty/esm"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.34.24"
}
]
}
],
"versions": [
"1.22",
"1.23",
"1.24",
"1.25",
"1.26",
"1.27",
"1.30",
"1.31",
"1.32",
"1.33",
"1.34",
"1.34.1",
"1.34.2",
"1.34.3",
"1.34.4",
"1.34.5",
"1.34.6",
"1.34.7",
"1.34.8",
"1.34.9",
"1.34.13",
"1.34.14",
"1.34.16",
"1.34.17",
"1.34.18",
"1.34.20",
"1.34.22"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "grub-efi-amd64-signed",
"binary_version": "1.34.24+2.02~beta2-9ubuntu1.21"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"cves": []
}
}
},
{
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "grub2",
"purl": "pkg:deb/ubuntu/grub2@2.02~beta2-36ubuntu3.27?arch=source&distro=xenial"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.02~beta2-36ubuntu3.27"
}
]
}
],
"versions": [
"2.02~beta2-29",
"2.02~beta2-31",
"2.02~beta2-31ubuntu1",
"2.02~beta2-32",
"2.02~beta2-32ubuntu1",
"2.02~beta2-35",
"2.02~beta2-35ubuntu1",
"2.02~beta2-36",
"2.02~beta2-36ubuntu1",
"2.02~beta2-36ubuntu2",
"2.02~beta2-36ubuntu3",
"2.02~beta2-36ubuntu3.1",
"2.02~beta2-36ubuntu3.2",
"2.02~beta2-36ubuntu3.6",
"2.02~beta2-36ubuntu3.7",
"2.02~beta2-36ubuntu3.8",
"2.02~beta2-36ubuntu3.9",
"2.02~beta2-36ubuntu3.11",
"2.02~beta2-36ubuntu3.12",
"2.02~beta2-36ubuntu3.14",
"2.02~beta2-36ubuntu3.15",
"2.02~beta2-36ubuntu3.16",
"2.02~beta2-36ubuntu3.17",
"2.02~beta2-36ubuntu3.18",
"2.02~beta2-36ubuntu3.19",
"2.02~beta2-36ubuntu3.20",
"2.02~beta2-36ubuntu3.21",
"2.02~beta2-36ubuntu3.22",
"2.02~beta2-36ubuntu3.23",
"2.02~beta2-36ubuntu3.26"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "grub-common",
"binary_version": "2.02~beta2-36ubuntu3.27"
},
{
"binary_name": "grub-coreboot",
"binary_version": "2.02~beta2-36ubuntu3.27"
},
{
"binary_name": "grub-coreboot-bin",
"binary_version": "2.02~beta2-36ubuntu3.27"
},
{
"binary_name": "grub-efi",
"binary_version": "2.02~beta2-36ubuntu3.27"
},
{
"binary_name": "grub-efi-amd64",
"binary_version": "2.02~beta2-36ubuntu3.27"
},
{
"binary_name": "grub-efi-amd64-bin",
"binary_version": "2.02~beta2-36ubuntu3.27"
},
{
"binary_name": "grub-efi-arm",
"binary_version": "2.02~beta2-36ubuntu3.27"
},
{
"binary_name": "grub-efi-arm-bin",
"binary_version": "2.02~beta2-36ubuntu3.27"
},
{
"binary_name": "grub-efi-arm64",
"binary_version": "2.02~beta2-36ubuntu3.27"
},
{
"binary_name": "grub-efi-arm64-bin",
"binary_version": "2.02~beta2-36ubuntu3.27"
},
{
"binary_name": "grub-efi-ia32",
"binary_version": "2.02~beta2-36ubuntu3.27"
},
{
"binary_name": "grub-efi-ia32-bin",
"binary_version": "2.02~beta2-36ubuntu3.27"
},
{
"binary_name": "grub-emu",
"binary_version": "2.02~beta2-36ubuntu3.27"
},
{
"binary_name": "grub-firmware-qemu",
"binary_version": "2.02~beta2-36ubuntu3.27"
},
{
"binary_name": "grub-ieee1275",
"binary_version": "2.02~beta2-36ubuntu3.27"
},
{
"binary_name": "grub-ieee1275-bin",
"binary_version": "2.02~beta2-36ubuntu3.27"
},
{
"binary_name": "grub-linuxbios",
"binary_version": "2.02~beta2-36ubuntu3.27"
},
{
"binary_name": "grub-pc",
"binary_version": "2.02~beta2-36ubuntu3.27"
},
{
"binary_name": "grub-pc-bin",
"binary_version": "2.02~beta2-36ubuntu3.27"
},
{
"binary_name": "grub-rescue-pc",
"binary_version": "2.02~beta2-36ubuntu3.27"
},
{
"binary_name": "grub-theme-starfield",
"binary_version": "2.02~beta2-36ubuntu3.27"
},
{
"binary_name": "grub-uboot",
"binary_version": "2.02~beta2-36ubuntu3.27"
},
{
"binary_name": "grub-uboot-bin",
"binary_version": "2.02~beta2-36ubuntu3.27"
},
{
"binary_name": "grub-xen",
"binary_version": "2.02~beta2-36ubuntu3.27"
},
{
"binary_name": "grub-xen-bin",
"binary_version": "2.02~beta2-36ubuntu3.27"
},
{
"binary_name": "grub-xen-host",
"binary_version": "2.02~beta2-36ubuntu3.27"
},
{
"binary_name": "grub2",
"binary_version": "2.02~beta2-36ubuntu3.27"
},
{
"binary_name": "grub2-common",
"binary_version": "2.02~beta2-36ubuntu3.27"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:16.04:LTS",
"cves": []
}
}
},
{
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "grub2-signed",
"purl": "pkg:deb/ubuntu/grub2-signed@1.66.27?arch=source&distro=xenial"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.66.27"
}
]
}
],
"versions": [
"1.55",
"1.56",
"1.57",
"1.58",
"1.59",
"1.61",
"1.62",
"1.63",
"1.64",
"1.65",
"1.66",
"1.66.1",
"1.66.2",
"1.66.6",
"1.66.7",
"1.66.8",
"1.66.9",
"1.66.11",
"1.66.12",
"1.66.14",
"1.66.15",
"1.66.16",
"1.66.17",
"1.66.18",
"1.66.19",
"1.66.20",
"1.66.21",
"1.66.22",
"1.66.23",
"1.66.26"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "grub-efi-amd64-signed",
"binary_version": "1.66.27+2.02~beta2-36ubuntu3.27"
},
{
"binary_name": "grub-efi-arm64-signed",
"binary_version": "1.66.27+2.02~beta2-36ubuntu3.27"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:16.04:LTS",
"cves": []
}
}
},
{
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "grub2",
"purl": "pkg:deb/ubuntu/grub2@2.02-2ubuntu8.17?arch=source&distro=bionic"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.02-2ubuntu8.17"
}
]
}
],
"versions": [
"2.02~beta3-4ubuntu7",
"2.02-2ubuntu1",
"2.02-2ubuntu2",
"2.02-2ubuntu4",
"2.02-2ubuntu6",
"2.02-2ubuntu7",
"2.02-2ubuntu8",
"2.02-2ubuntu8.1",
"2.02-2ubuntu8.2",
"2.02-2ubuntu8.3",
"2.02-2ubuntu8.4",
"2.02-2ubuntu8.6",
"2.02-2ubuntu8.7",
"2.02-2ubuntu8.9",
"2.02-2ubuntu8.10",
"2.02-2ubuntu8.12",
"2.02-2ubuntu8.13",
"2.02-2ubuntu8.14",
"2.02-2ubuntu8.15",
"2.02-2ubuntu8.16"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "grub-common",
"binary_version": "2.02-2ubuntu8.17"
},
{
"binary_name": "grub-coreboot",
"binary_version": "2.02-2ubuntu8.17"
},
{
"binary_name": "grub-coreboot-bin",
"binary_version": "2.02-2ubuntu8.17"
},
{
"binary_name": "grub-efi",
"binary_version": "2.02-2ubuntu8.17"
},
{
"binary_name": "grub-efi-amd64",
"binary_version": "2.02-2ubuntu8.17"
},
{
"binary_name": "grub-efi-amd64-bin",
"binary_version": "2.02-2ubuntu8.17"
},
{
"binary_name": "grub-efi-arm",
"binary_version": "2.02-2ubuntu8.17"
},
{
"binary_name": "grub-efi-arm-bin",
"binary_version": "2.02-2ubuntu8.17"
},
{
"binary_name": "grub-efi-arm64",
"binary_version": "2.02-2ubuntu8.17"
},
{
"binary_name": "grub-efi-arm64-bin",
"binary_version": "2.02-2ubuntu8.17"
},
{
"binary_name": "grub-efi-ia32",
"binary_version": "2.02-2ubuntu8.17"
},
{
"binary_name": "grub-efi-ia32-bin",
"binary_version": "2.02-2ubuntu8.17"
},
{
"binary_name": "grub-emu",
"binary_version": "2.02-2ubuntu8.17"
},
{
"binary_name": "grub-firmware-qemu",
"binary_version": "2.02-2ubuntu8.17"
},
{
"binary_name": "grub-ieee1275",
"binary_version": "2.02-2ubuntu8.17"
},
{
"binary_name": "grub-ieee1275-bin",
"binary_version": "2.02-2ubuntu8.17"
},
{
"binary_name": "grub-linuxbios",
"binary_version": "2.02-2ubuntu8.17"
},
{
"binary_name": "grub-pc",
"binary_version": "2.02-2ubuntu8.17"
},
{
"binary_name": "grub-pc-bin",
"binary_version": "2.02-2ubuntu8.17"
},
{
"binary_name": "grub-rescue-pc",
"binary_version": "2.02-2ubuntu8.17"
},
{
"binary_name": "grub-theme-starfield",
"binary_version": "2.02-2ubuntu8.17"
},
{
"binary_name": "grub-uboot",
"binary_version": "2.02-2ubuntu8.17"
},
{
"binary_name": "grub-uboot-bin",
"binary_version": "2.02-2ubuntu8.17"
},
{
"binary_name": "grub-xen",
"binary_version": "2.02-2ubuntu8.17"
},
{
"binary_name": "grub-xen-bin",
"binary_version": "2.02-2ubuntu8.17"
},
{
"binary_name": "grub-xen-host",
"binary_version": "2.02-2ubuntu8.17"
},
{
"binary_name": "grub2",
"binary_version": "2.02-2ubuntu8.17"
},
{
"binary_name": "grub2-common",
"binary_version": "2.02-2ubuntu8.17"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:18.04:LTS",
"cves": []
}
}
},
{
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "grub2-signed",
"purl": "pkg:deb/ubuntu/grub2-signed@1.93.19?arch=source&distro=bionic"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.93.19"
}
]
}
],
"versions": [
"1.85",
"1.86",
"1.87",
"1.89",
"1.91",
"1.92",
"1.93",
"1.93.1",
"1.93.2",
"1.93.3",
"1.93.4",
"1.93.5",
"1.93.7",
"1.93.8",
"1.93.10",
"1.93.11",
"1.93.13",
"1.93.14",
"1.93.15",
"1.93.16",
"1.93.18"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "grub-efi-amd64-signed",
"binary_version": "1.93.19+2.02-2ubuntu8.17"
},
{
"binary_name": "grub-efi-arm64-signed",
"binary_version": "1.93.19+2.02-2ubuntu8.17"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:18.04:LTS",
"cves": []
}
}
},
{
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "grub2",
"purl": "pkg:deb/ubuntu/grub2@2.04-1ubuntu26.2?arch=source&distro=focal"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.04-1ubuntu26.2"
}
]
}
],
"versions": [
"2.04-1ubuntu12",
"2.04-1ubuntu13",
"2.04-1ubuntu14",
"2.04-1ubuntu16",
"2.04-1ubuntu18",
"2.04-1ubuntu20",
"2.04-1ubuntu21",
"2.04-1ubuntu22",
"2.04-1ubuntu23",
"2.04-1ubuntu24",
"2.04-1ubuntu25",
"2.04-1ubuntu26",
"2.04-1ubuntu26.1"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "grub-common",
"binary_version": "2.04-1ubuntu26.2"
},
{
"binary_name": "grub-coreboot",
"binary_version": "2.04-1ubuntu26.2"
},
{
"binary_name": "grub-coreboot-bin",
"binary_version": "2.04-1ubuntu26.2"
},
{
"binary_name": "grub-efi",
"binary_version": "2.04-1ubuntu26.2"
},
{
"binary_name": "grub-efi-amd64",
"binary_version": "2.04-1ubuntu26.2"
},
{
"binary_name": "grub-efi-amd64-bin",
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{
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{
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{
"binary_name": "grub-efi-arm-bin",
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
"binary_name": "grub2-common",
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],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
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"cves": []
}
}
},
{
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},
"ranges": [
{
"type": "ECOSYSTEM",
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{
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{
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],
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"1.129",
"1.130",
"1.131",
"1.133",
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{
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],
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},
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}
],
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-4432-2"
},
{
"type": "REPORT",
"url": "https://launchpad.net/bugs/1889556"
}
]
}