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vuln-ubuntu/data/osv/cve/2021/UBUNTU-CVE-2021-25215.json
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{
"schema_version": "1.7.0",
"id": "UBUNTU-CVE-2021-25215",
"details": "In BIND 9.0.0 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a query for a record triggering the flaw described above, the named process will terminate due to a failed assertion check. The vulnerability affects all currently maintained BIND 9 branches (9.11, 9.11-S, 9.16, 9.16-S, 9.17) as well as all other versions of BIND 9.",
"aliases": [],
"upstream": [
"CVE-2021-25215"
],
"related": [
"USN-4929-1",
"USN-7739-1"
],
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"published": "2021-04-28T00:00:00Z",
"modified": "2026-04-22T07:39:56Z",
"affected": [
{
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "bind9",
"purl": "pkg:deb/ubuntu/bind9@1:9.9.5.dfsg-3ubuntu0.19+esm13?arch=source&distro=esm-infra-legacy/trusty"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:9.9.5.dfsg-3ubuntu0.19+esm13"
}
]
}
],
"versions": [
"1:9.9.3.dfsg.P2-4ubuntu1",
"1:9.9.3.dfsg.P2-4ubuntu2",
"1:9.9.3.dfsg.P2-4ubuntu3",
"1:9.9.5.dfsg-2",
"1:9.9.5.dfsg-3",
"1:9.9.5.dfsg-3ubuntu0.1",
"1:9.9.5.dfsg-3ubuntu0.2",
"1:9.9.5.dfsg-3ubuntu0.3",
"1:9.9.5.dfsg-3ubuntu0.4",
"1:9.9.5.dfsg-3ubuntu0.5",
"1:9.9.5.dfsg-3ubuntu0.6",
"1:9.9.5.dfsg-3ubuntu0.7",
"1:9.9.5.dfsg-3ubuntu0.8",
"1:9.9.5.dfsg-3ubuntu0.9",
"1:9.9.5.dfsg-3ubuntu0.10",
"1:9.9.5.dfsg-3ubuntu0.11",
"1:9.9.5.dfsg-3ubuntu0.12",
"1:9.9.5.dfsg-3ubuntu0.13",
"1:9.9.5.dfsg-3ubuntu0.14",
"1:9.9.5.dfsg-3ubuntu0.15",
"1:9.9.5.dfsg-3ubuntu0.16",
"1:9.9.5.dfsg-3ubuntu0.17",
"1:9.9.5.dfsg-3ubuntu0.18",
"1:9.9.5.dfsg-3ubuntu0.19",
"1:9.9.5.dfsg-3ubuntu0.19+esm1",
"1:9.9.5.dfsg-3ubuntu0.19+esm2",
"1:9.9.5.dfsg-3ubuntu0.19+esm3",
"1:9.9.5.dfsg-3ubuntu0.19+esm4",
"1:9.9.5.dfsg-3ubuntu0.19+esm5",
"1:9.9.5.dfsg-3ubuntu0.19+esm6",
"1:9.9.5.dfsg-3ubuntu0.19+esm7",
"1:9.9.5.dfsg-3ubuntu0.19+esm9",
"1:9.9.5.dfsg-3ubuntu0.19+esm10",
"1:9.9.5.dfsg-3ubuntu0.19+esm11",
"1:9.9.5.dfsg-3ubuntu0.19+esm12"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "bind9",
"binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13"
},
{
"binary_name": "bind9-host",
"binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13"
},
{
"binary_name": "bind9utils",
"binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13"
},
{
"binary_name": "dnsutils",
"binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13"
},
{
"binary_name": "host",
"binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13"
},
{
"binary_name": "libbind9-90",
"binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13"
},
{
"binary_name": "libdns100",
"binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13"
},
{
"binary_name": "libisc95",
"binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13"
},
{
"binary_name": "libisccc90",
"binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13"
},
{
"binary_name": "libisccfg90",
"binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13"
},
{
"binary_name": "liblwres90",
"binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13"
},
{
"binary_name": "lwresd",
"binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13"
}
],
"availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"
}
},
{
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "bind9",
"purl": "pkg:deb/ubuntu/bind9@1:9.10.3.dfsg.P4-8ubuntu1.19?arch=source&distro=xenial"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:9.10.3.dfsg.P4-8ubuntu1.19"
}
]
}
],
"versions": [
"1:9.9.5.dfsg-11ubuntu1",
"1:9.9.5.dfsg-12",
"1:9.9.5.dfsg-12.1",
"1:9.9.5.dfsg-12.1ubuntu1",
"1:9.10.3.dfsg.P2-4",
"1:9.10.3.dfsg.P2-5",
"1:9.10.3.dfsg.P4-3",
"1:9.10.3.dfsg.P4-4",
"1:9.10.3.dfsg.P4-5",
"1:9.10.3.dfsg.P4-8",
"1:9.10.3.dfsg.P4-8ubuntu1",
"1:9.10.3.dfsg.P4-8ubuntu1.1",
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"1:9.10.3.dfsg.P4-8ubuntu1.9",
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"1:9.10.3.dfsg.P4-8ubuntu1.11",
"1:9.10.3.dfsg.P4-8ubuntu1.12",
"1:9.10.3.dfsg.P4-8ubuntu1.14",
"1:9.10.3.dfsg.P4-8ubuntu1.15",
"1:9.10.3.dfsg.P4-8ubuntu1.16",
"1:9.10.3.dfsg.P4-8ubuntu1.17",
"1:9.10.3.dfsg.P4-8ubuntu1.18"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "bind9",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.19"
},
{
"binary_name": "bind9-host",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.19"
},
{
"binary_name": "bind9utils",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.19"
},
{
"binary_name": "dnsutils",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.19"
},
{
"binary_name": "host",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.19"
},
{
"binary_name": "libbind9-140",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.19"
},
{
"binary_name": "libdns-export162",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.19"
},
{
"binary_name": "libdns162",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.19"
},
{
"binary_name": "libirs-export141",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.19"
},
{
"binary_name": "libirs141",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.19"
},
{
"binary_name": "libisc-export160",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.19"
},
{
"binary_name": "libisc160",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.19"
},
{
"binary_name": "libisccc-export140",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.19"
},
{
"binary_name": "libisccc140",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.19"
},
{
"binary_name": "libisccfg-export140",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.19"
},
{
"binary_name": "libisccfg140",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.19"
},
{
"binary_name": "liblwres141",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.19"
},
{
"binary_name": "lwresd",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.19"
}
],
"availability": "No subscription required"
}
},
{
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "bind9",
"purl": "pkg:deb/ubuntu/bind9@1:9.11.3+dfsg-1ubuntu1.15?arch=source&distro=bionic"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:9.11.3+dfsg-1ubuntu1.15"
}
]
}
],
"versions": [
"1:9.10.3.dfsg.P4-12.6ubuntu1",
"1:9.11.2.P1-1ubuntu2",
"1:9.11.2.P1-1ubuntu3",
"1:9.11.2.P1-1ubuntu4",
"1:9.11.2.P1-1ubuntu5",
"1:9.11.3+dfsg-1ubuntu1",
"1:9.11.3+dfsg-1ubuntu1.1",
"1:9.11.3+dfsg-1ubuntu1.2",
"1:9.11.3+dfsg-1ubuntu1.3",
"1:9.11.3+dfsg-1ubuntu1.5",
"1:9.11.3+dfsg-1ubuntu1.7",
"1:9.11.3+dfsg-1ubuntu1.8",
"1:9.11.3+dfsg-1ubuntu1.9",
"1:9.11.3+dfsg-1ubuntu1.10",
"1:9.11.3+dfsg-1ubuntu1.11",
"1:9.11.3+dfsg-1ubuntu1.12",
"1:9.11.3+dfsg-1ubuntu1.13",
"1:9.11.3+dfsg-1ubuntu1.14"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "bind9",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.15"
},
{
"binary_name": "bind9-host",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.15"
},
{
"binary_name": "bind9utils",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.15"
},
{
"binary_name": "dnsutils",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.15"
},
{
"binary_name": "libbind9-160",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.15"
},
{
"binary_name": "libdns-export1100",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.15"
},
{
"binary_name": "libdns1100",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.15"
},
{
"binary_name": "libirs-export160",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.15"
},
{
"binary_name": "libirs160",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.15"
},
{
"binary_name": "libisc-export169",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.15"
},
{
"binary_name": "libisc169",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.15"
},
{
"binary_name": "libisccc-export160",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.15"
},
{
"binary_name": "libisccc160",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.15"
},
{
"binary_name": "libisccfg-export160",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.15"
},
{
"binary_name": "libisccfg160",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.15"
},
{
"binary_name": "liblwres160",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.15"
}
],
"availability": "No subscription required"
}
},
{
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "bind9",
"purl": "pkg:deb/ubuntu/bind9@1:9.16.1-0ubuntu2.8?arch=source&distro=focal"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:9.16.1-0ubuntu2.8"
}
]
}
],
"versions": [
"1:9.11.5.P4+dfsg-5.1ubuntu2",
"1:9.11.5.P4+dfsg-5.1ubuntu3",
"1:9.11.5.P4+dfsg-5.1ubuntu4",
"1:9.11.5.P4+dfsg-5.1ubuntu5",
"1:9.11.14+dfsg-1ubuntu1",
"1:9.11.14+dfsg-3ubuntu1",
"1:9.16.0-1ubuntu3",
"1:9.16.0-1ubuntu4",
"1:9.16.0-1ubuntu5",
"1:9.16.1-0ubuntu1",
"1:9.16.1-0ubuntu2",
"1:9.16.1-0ubuntu2.1",
"1:9.16.1-0ubuntu2.2",
"1:9.16.1-0ubuntu2.3",
"1:9.16.1-0ubuntu2.4",
"1:9.16.1-0ubuntu2.6",
"1:9.16.1-0ubuntu2.7"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "bind9",
"binary_version": "1:9.16.1-0ubuntu2.8"
},
{
"binary_name": "bind9-dnsutils",
"binary_version": "1:9.16.1-0ubuntu2.8"
},
{
"binary_name": "bind9-host",
"binary_version": "1:9.16.1-0ubuntu2.8"
},
{
"binary_name": "bind9-libs",
"binary_version": "1:9.16.1-0ubuntu2.8"
},
{
"binary_name": "bind9-utils",
"binary_version": "1:9.16.1-0ubuntu2.8"
},
{
"binary_name": "bind9utils",
"binary_version": "1:9.16.1-0ubuntu2.8"
},
{
"binary_name": "dnsutils",
"binary_version": "1:9.16.1-0ubuntu2.8"
}
],
"availability": "No subscription required"
}
}
],
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-25215"
},
{
"type": "REPORT",
"url": "https://kb.isc.org/docs/cve-2021-25215"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-4929-1"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-25215"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-7739-1"
}
]
}
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