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vuln-ubuntu/data/osv/usn/USN-4981-1.json
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{
"schema_version": "1.7.0",
"id": "USN-4981-1",
"summary": "squid, squid3 vulnerabilities",
"details": "Joshua Rogers discovered that Squid incorrectly handled requests with the\nurn: scheme. A remote attacker could possibly use this issue to cause\nSquid to consume resources, leading to a denial of service.\n(CVE-2021-28651)\n\nJoshua Rogers discovered that Squid incorrectly handled requests to the\nCache Manager API. A remote attacker with access privileges could possibly\nuse this issue to cause Squid to consume resources, leading to a denial of\nservice. This issue was only addressed in Ubuntu 20.04 LTS, Ubuntu 20.10,\nand Ubuntu 21.04. (CVE-2021-28652)\n\nJoshua Rogers discovered that Squid incorrectly handled certain response\nheaders. A remote attacker could possibly use this issue to cause Squid to\ncrash, resulting in a denial of service. This issue was only affected\nUbuntu 20.04 LTS, Ubuntu 20.10, and Ubuntu 21.04. (CVE-2021-28662)\n\nJoshua Rogers discovered that Squid incorrectly handled range request\nprocessing. A remote attacker could possibly use this issue to cause Squid\nto crash, resulting in a denial of service. (CVE-2021-31806,\nCVE-2021-31807, CVE-2021-31808)\n\nJoshua Rogers discovered that Squid incorrectly handled certain HTTP\nresponses. A remote attacker could possibly use this issue to cause Squid\nto crash, resulting in a denial of service. (CVE-2021-33620)\n",
"aliases": [],
"upstream": [
"UBUNTU-CVE-2021-28651",
"UBUNTU-CVE-2021-28652",
"UBUNTU-CVE-2021-28662",
"UBUNTU-CVE-2021-31806",
"UBUNTU-CVE-2021-31807",
"UBUNTU-CVE-2021-31808",
"UBUNTU-CVE-2021-33620"
],
"related": [],
"published": "2021-06-03T16:24:27Z",
"modified": "2026-04-27T14:11:27Z",
"affected": [
{
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "squid3",
"purl": "pkg:deb/ubuntu/squid3@3.5.27-1ubuntu1.11?arch=source&distro=bionic"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.5.27-1ubuntu1.11"
}
]
}
],
"versions": [
"3.5.23-5ubuntu1",
"3.5.23-5ubuntu2",
"3.5.27-1ubuntu1",
"3.5.27-1ubuntu1.1",
"3.5.27-1ubuntu1.2",
"3.5.27-1ubuntu1.3",
"3.5.27-1ubuntu1.4",
"3.5.27-1ubuntu1.5",
"3.5.27-1ubuntu1.6",
"3.5.27-1ubuntu1.7",
"3.5.27-1ubuntu1.8",
"3.5.27-1ubuntu1.9",
"3.5.27-1ubuntu1.10"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "squid",
"binary_version": "3.5.27-1ubuntu1.11"
},
{
"binary_name": "squid-cgi",
"binary_version": "3.5.27-1ubuntu1.11"
},
{
"binary_name": "squid-common",
"binary_version": "3.5.27-1ubuntu1.11"
},
{
"binary_name": "squid-purge",
"binary_version": "3.5.27-1ubuntu1.11"
},
{
"binary_name": "squid3",
"binary_version": "3.5.27-1ubuntu1.11"
},
{
"binary_name": "squidclient",
"binary_version": "3.5.27-1ubuntu1.11"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:18.04:LTS",
"cves": [
{
"id": "CVE-2021-28651",
"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": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2021-28652",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2021-31806",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2021-31807",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2021-31808",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2021-33620",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
]
}
}
},
{
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "squid",
"purl": "pkg:deb/ubuntu/squid@4.10-1ubuntu1.4?arch=source&distro=focal"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.10-1ubuntu1.4"
}
]
}
],
"versions": [
"4.8-1ubuntu2",
"4.8-1ubuntu3",
"4.9-2ubuntu1",
"4.9-2ubuntu2",
"4.9-2ubuntu3",
"4.9-2ubuntu4",
"4.10-1ubuntu1",
"4.10-1ubuntu1.1",
"4.10-1ubuntu1.2",
"4.10-1ubuntu1.3"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "squid",
"binary_version": "4.10-1ubuntu1.4"
},
{
"binary_name": "squid-cgi",
"binary_version": "4.10-1ubuntu1.4"
},
{
"binary_name": "squid-common",
"binary_version": "4.10-1ubuntu1.4"
},
{
"binary_name": "squid-purge",
"binary_version": "4.10-1ubuntu1.4"
},
{
"binary_name": "squidclient",
"binary_version": "4.10-1ubuntu1.4"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:20.04:LTS",
"cves": [
{
"id": "CVE-2021-28651",
"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": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2021-28652",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2021-28662",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2021-31806",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2021-31807",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2021-31808",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2021-33620",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
]
}
}
}
],
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-4981-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-28651"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-28652"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-28662"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-31806"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-31807"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-31808"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-33620"
}
]
}
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