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vuln-ubuntu/data/osv/usn/USN-5391-1.json
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{
"schema_version": "1.7.0",
"id": "USN-5391-1",
"summary": "libsepol vulnerabilities",
"details": "Nicolas Iooss discovered that libsepol incorrectly handled memory\nwhen handling policies. An attacker could possibly use this issue\nto cause a crash, resulting in a denial of service, or possibly\nexecute arbitrary code. (CVE-2021-36084)\n\nIt was discovered that libsepol incorrectly handled memory when\nhandling policies. An attacker could possibly use this issue to cause\na crash, resulting in a denial of service, or possibly execute\narbitrary code. (CVE-2021-36085)\n\nIt was discovered that libsepol incorrectly handled memory when\nhandling policies. An attacker could possibly use this issue to cause\na crash, resulting in a denial of service, or possibly execute\narbitrary code. This issue only affects Ubuntu 18.04 LTS, \nUbuntu 20.04 LTS and Ubuntu 21.10. (CVE-2021-36086)\n\nIt was discovered that libsepol incorrectly validated certain data,\nleading to a heap overflow. An attacker could possibly use this issue\nto cause a crash, resulting in a denial of service, or possibly execute\narbitrary code. (CVE-2021-36087)\n",
"aliases": [],
"upstream": [
"UBUNTU-CVE-2021-36084",
"UBUNTU-CVE-2021-36085",
"UBUNTU-CVE-2021-36086",
"UBUNTU-CVE-2021-36087"
],
"related": [],
"published": "2022-04-27T09:32:18Z",
"modified": "2026-06-25T10:46:05Z",
"affected": [
{
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "libsepol",
"purl": "pkg:deb/ubuntu/libsepol@2.4-2ubuntu0.1~esm1?arch=source&distro=esm-infra/xenial"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.4-2ubuntu0.1~esm1"
}
]
}
],
"versions": [
"2.3-2",
"2.4-2"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libsepol1",
"binary_version": "2.4-2ubuntu0.1~esm1"
},
{
"binary_name": "sepol-utils",
"binary_version": "2.4-2ubuntu0.1~esm1"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"cves": [
{
"id": "CVE-2021-36084",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2021-36085",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2021-36087",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"
},
{
"type": "Ubuntu",
"score": "low"
}
]
}
]
}
}
},
{
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "libsepol",
"purl": "pkg:deb/ubuntu/libsepol@2.7-1ubuntu0.1?arch=source&distro=bionic"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.7-1ubuntu0.1"
}
]
}
],
"versions": [
"2.7-1"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libsepol1",
"binary_version": "2.7-1ubuntu0.1"
},
{
"binary_name": "sepol-utils",
"binary_version": "2.7-1ubuntu0.1"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:18.04:LTS",
"cves": [
{
"id": "CVE-2021-36084",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2021-36085",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2021-36086",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2021-36087",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"
},
{
"type": "Ubuntu",
"score": "low"
}
]
}
]
}
}
},
{
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "libsepol",
"purl": "pkg:deb/ubuntu/libsepol@3.0-1ubuntu0.1?arch=source&distro=focal"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.0-1ubuntu0.1"
}
]
}
],
"versions": [
"2.9-2",
"3.0-1"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libsepol1",
"binary_version": "3.0-1ubuntu0.1"
},
{
"binary_name": "sepol-utils",
"binary_version": "3.0-1ubuntu0.1"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:20.04:LTS",
"cves": [
{
"id": "CVE-2021-36084",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2021-36085",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2021-36086",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2021-36087",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"
},
{
"type": "Ubuntu",
"score": "low"
}
]
}
]
}
}
}
],
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-5391-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-36084"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-36085"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-36086"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-36087"
}
]
}
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