usn-4737-1
Vulnerability from osv_ubuntu
Published
2021-02-18 12:05
Modified
2026-04-22 07:36
Summary
bind9 vulnerability
Details
It was discovered that Bind incorrectly handled GSSAPI security policy negotiation. A remote attacker could use this issue to cause Bind to crash, resulting in a denial of service, or possibly execute arbitrary code. In the default installation, attackers would be isolated by the Bind AppArmor profile.
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2020-8625",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:16.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "bind9",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.18"
},
{
"binary_name": "bind9-host",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.18"
},
{
"binary_name": "bind9utils",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.18"
},
{
"binary_name": "dnsutils",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.18"
},
{
"binary_name": "host",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.18"
},
{
"binary_name": "libbind9-140",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.18"
},
{
"binary_name": "libdns-export162",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.18"
},
{
"binary_name": "libdns162",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.18"
},
{
"binary_name": "libirs-export141",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.18"
},
{
"binary_name": "libirs141",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.18"
},
{
"binary_name": "libisc-export160",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.18"
},
{
"binary_name": "libisc160",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.18"
},
{
"binary_name": "libisccc-export140",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.18"
},
{
"binary_name": "libisccc140",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.18"
},
{
"binary_name": "libisccfg-export140",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.18"
},
{
"binary_name": "libisccfg140",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.18"
},
{
"binary_name": "liblwres141",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.18"
},
{
"binary_name": "lwresd",
"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.18"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "bind9",
"purl": "pkg:deb/ubuntu/bind9@1:9.10.3.dfsg.P4-8ubuntu1.18?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:9.10.3.dfsg.P4-8ubuntu1.18"
}
],
"type": "ECOSYSTEM"
}
],
"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",
"1:9.10.3.dfsg.P4-8ubuntu1.2",
"1:9.10.3.dfsg.P4-8ubuntu1.3",
"1:9.10.3.dfsg.P4-8ubuntu1.4",
"1:9.10.3.dfsg.P4-8ubuntu1.5",
"1:9.10.3.dfsg.P4-8ubuntu1.6",
"1:9.10.3.dfsg.P4-8ubuntu1.7",
"1:9.10.3.dfsg.P4-8ubuntu1.8",
"1:9.10.3.dfsg.P4-8ubuntu1.9",
"1:9.10.3.dfsg.P4-8ubuntu1.10",
"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"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2020-8625",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:18.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "bind9",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.14"
},
{
"binary_name": "bind9-host",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.14"
},
{
"binary_name": "bind9utils",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.14"
},
{
"binary_name": "dnsutils",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.14"
},
{
"binary_name": "libbind9-160",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.14"
},
{
"binary_name": "libdns-export1100",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.14"
},
{
"binary_name": "libdns1100",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.14"
},
{
"binary_name": "libirs-export160",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.14"
},
{
"binary_name": "libirs160",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.14"
},
{
"binary_name": "libisc-export169",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.14"
},
{
"binary_name": "libisc169",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.14"
},
{
"binary_name": "libisccc-export160",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.14"
},
{
"binary_name": "libisccc160",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.14"
},
{
"binary_name": "libisccfg-export160",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.14"
},
{
"binary_name": "libisccfg160",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.14"
},
{
"binary_name": "liblwres160",
"binary_version": "1:9.11.3+dfsg-1ubuntu1.14"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "bind9",
"purl": "pkg:deb/ubuntu/bind9@1:9.11.3+dfsg-1ubuntu1.14?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:9.11.3+dfsg-1ubuntu1.14"
}
],
"type": "ECOSYSTEM"
}
],
"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"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2020-8625",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:20.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "bind9",
"binary_version": "1:9.16.1-0ubuntu2.6"
},
{
"binary_name": "bind9-dnsutils",
"binary_version": "1:9.16.1-0ubuntu2.6"
},
{
"binary_name": "bind9-host",
"binary_version": "1:9.16.1-0ubuntu2.6"
},
{
"binary_name": "bind9-libs",
"binary_version": "1:9.16.1-0ubuntu2.6"
},
{
"binary_name": "bind9-utils",
"binary_version": "1:9.16.1-0ubuntu2.6"
},
{
"binary_name": "bind9utils",
"binary_version": "1:9.16.1-0ubuntu2.6"
},
{
"binary_name": "dnsutils",
"binary_version": "1:9.16.1-0ubuntu2.6"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "bind9",
"purl": "pkg:deb/ubuntu/bind9@1:9.16.1-0ubuntu2.6?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:9.16.1-0ubuntu2.6"
}
],
"type": "ECOSYSTEM"
}
],
"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"
]
}
],
"aliases": [],
"details": "It was discovered that Bind incorrectly handled GSSAPI security policy\nnegotiation. A remote attacker could use this issue to cause Bind to crash,\nresulting in a denial of service, or possibly execute arbitrary code. In\nthe default installation, attackers would be isolated by the Bind AppArmor\nprofile.\n",
"id": "USN-4737-1",
"modified": "2026-04-22T07:36:58Z",
"published": "2021-02-18T12:05:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-4737-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-8625"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "bind9 vulnerability",
"upstream": [
"UBUNTU-CVE-2020-8625"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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