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vuln-ubuntu/data/osv/usn/USN-4698-1.json
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{
"schema_version": "1.7.0",
"id": "USN-4698-1",
"summary": "dnsmasq vulnerabilities",
"details": "Moshe Kol and Shlomi Oberman discovered that Dnsmasq incorrectly handled\nmemory when sorting RRsets. A remote attacker could use this issue to cause\nDnsmasq to hang, resulting in a denial of service, or possibly execute\narbitrary code. (CVE-2020-25681, CVE-2020-25687)\n\nMoshe Kol and Shlomi Oberman discovered that Dnsmasq incorrectly handled\nextracting certain names. A remote attacker could use this issue to cause\nDnsmasq to hang, resulting in a denial of service, or possibly execute\narbitrary code. (CVE-2020-25682, CVE-2020-25683)\n\nMoshe Kol and Shlomi Oberman discovered that Dnsmasq incorrectly\nimplemented address/port checks. A remote attacker could use this issue to\nperform a cache poisoning attack. (CVE-2020-25684)\n\nMoshe Kol and Shlomi Oberman discovered that Dnsmasq incorrectly\nimplemented query resource name checks. A remote attacker could use this\nissue to perform a cache poisoning attack. (CVE-2020-25685)\n\nMoshe Kol and Shlomi Oberman discovered that Dnsmasq incorrectly handled\nmultiple query requests for the same resource name. A remote attacker could\nuse this issue to perform a cache poisoning attack. (CVE-2020-25686)\n\nIt was discovered that Dnsmasq incorrectly handled memory during DHCP\nresponse creation. A remote attacker could possibly use this issue to\ncause Dnsmasq to consume resources, leading to a denial of service. This\nissue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04\nLTS. (CVE-2019-14834)\n",
"aliases": [],
"upstream": [
"UBUNTU-CVE-2019-14834",
"UBUNTU-CVE-2020-25681",
"UBUNTU-CVE-2020-25682",
"UBUNTU-CVE-2020-25683",
"UBUNTU-CVE-2020-25684",
"UBUNTU-CVE-2020-25685",
"UBUNTU-CVE-2020-25686",
"UBUNTU-CVE-2020-25687"
],
"related": [],
"published": "2021-01-19T12:48:33Z",
"modified": "2026-02-10T04:42:02Z",
"affected": [
{
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "dnsmasq",
"purl": "pkg:deb/ubuntu/dnsmasq@2.75-1ubuntu0.16.04.7?arch=source&distro=xenial"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.75-1ubuntu0.16.04.7"
}
]
}
],
"versions": [
"2.75-1",
"2.75-1ubuntu0.16.04.1",
"2.75-1ubuntu0.16.04.2",
"2.75-1ubuntu0.16.04.3",
"2.75-1ubuntu0.16.04.4",
"2.75-1ubuntu0.16.04.5"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "dnsmasq",
"binary_version": "2.75-1ubuntu0.16.04.7"
},
{
"binary_name": "dnsmasq-base",
"binary_version": "2.75-1ubuntu0.16.04.7"
},
{
"binary_name": "dnsmasq-utils",
"binary_version": "2.75-1ubuntu0.16.04.7"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:16.04:LTS",
"cves": [
{
"id": "CVE-2019-14834",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2020-25681",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2020-25682",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2020-25683",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2020-25684",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2020-25685",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2020-25686",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2020-25687",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
]
}
}
},
{
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "dnsmasq",
"purl": "pkg:deb/ubuntu/dnsmasq@2.79-1ubuntu0.2?arch=source&distro=bionic"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.79-1ubuntu0.2"
}
]
}
],
"versions": [
"2.78-1",
"2.78-3",
"2.79-1"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "dnsmasq",
"binary_version": "2.79-1ubuntu0.2"
},
{
"binary_name": "dnsmasq-base",
"binary_version": "2.79-1ubuntu0.2"
},
{
"binary_name": "dnsmasq-base-lua",
"binary_version": "2.79-1ubuntu0.2"
},
{
"binary_name": "dnsmasq-utils",
"binary_version": "2.79-1ubuntu0.2"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:18.04:LTS",
"cves": [
{
"id": "CVE-2019-14834",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2020-25681",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2020-25682",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2020-25683",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2020-25684",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2020-25685",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2020-25686",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2020-25687",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
]
}
}
},
{
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "dnsmasq",
"purl": "pkg:deb/ubuntu/dnsmasq@2.80-1.1ubuntu1.2?arch=source&distro=focal"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.80-1.1ubuntu1.2"
}
]
}
],
"versions": [
"2.80-1ubuntu2",
"2.80-1ubuntu4",
"2.80-1.1ubuntu1"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "dnsmasq",
"binary_version": "2.80-1.1ubuntu1.2"
},
{
"binary_name": "dnsmasq-base",
"binary_version": "2.80-1.1ubuntu1.2"
},
{
"binary_name": "dnsmasq-base-lua",
"binary_version": "2.80-1.1ubuntu1.2"
},
{
"binary_name": "dnsmasq-utils",
"binary_version": "2.80-1.1ubuntu1.2"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:20.04:LTS",
"cves": [
{
"id": "CVE-2019-14834",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2020-25681",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2020-25682",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2020-25683",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2020-25684",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2020-25685",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2020-25686",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2020-25687",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
]
}
}
}
],
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-4698-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2019-14834"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-25681"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-25682"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-25683"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-25684"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-25685"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-25686"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-25687"
}
]
}
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