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{
"schema_version": "1.7.0",
"id": "USN-4754-3",
"summary": "python2.7, python3.7, python3.8 vulnerabilities",
"details": "USN-4754-1 fixed vulnerabilities in Python. This update provides\nthe corresponding updates for Ubuntu 18.04 and Ubuntu 20.04.\n\nIn the case of Python 2.7 for 20.04, these additional fixes are included:\n\nIt was dicovered that Python allowed remote attackers to cause a denial of\nservice (resource consumption) via a ZIP bomb. (CVE-2019-9674)\n\nIt was discovered that Python had potentially misleading information about\nwhether sorting occurs. This fix updates the documentation about it.\n(CVE-2019-17514)\n\nIt was discovered that Python incorrectly handled certain TAR archives.\nAn attacker could possibly use this issue to cause a denial of service.\n(CVE-2019-20907)\n\nIt was discovered that Python allowed an HTTP server to conduct Regular\nExpression Denial of Service (ReDoS) attacks against a client because of\nurllib.request.AbstractBasicAuthHandler catastrophic backtracking.\n(CVE-2020-8492)\n\nIt was discovered that Python allowed CRLF injection if the attacker controls\nthe HTTP request method, as demonstrated by inserting CR and LF control\ncharacters in the first argument of HTTPConnection.request. (CVE-2020-26116)\n\nOriginal advisory details:\n\n It was discovered that Python incorrectly handled certain inputs.\n An attacker could possibly use this issue to execute arbitrary code\n or cause a denial of service. (CVE-2020-27619, CVE-2021-3177)\n",
"aliases": [],
"upstream": [
"UBUNTU-CVE-2019-9674",
"UBUNTU-CVE-2019-17514",
"UBUNTU-CVE-2019-20907",
"UBUNTU-CVE-2020-8492",
"UBUNTU-CVE-2020-26116",
"UBUNTU-CVE-2020-27619",
"UBUNTU-CVE-2021-3177"
],
"related": [],
"published": "2021-03-12T14:07:56Z",
"modified": "2026-10-08T16:28:19Z",
"affected": [
{
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "python3.7",
"purl": "pkg:deb/ubuntu/python3.7@3.7.5-2~18.04.4?arch=source&distro=bionic"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.7.5-2~18.04.4"
}
]
}
],
"versions": [
"3.7.0~a2-1",
"3.7.0~a3-1",
"3.7.0~a3-2",
"3.7.0~a3-3",
"3.7.0~a4-1",
"3.7.0~b1-1",
"3.7.0~b1-1build1",
"3.7.0~b2-1",
"3.7.0~b3-1",
"3.7.0-1~18.04",
"3.7.1-1~18.04",
"3.7.3-2~18.04.1",
"3.7.5-2~18.04"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "idle-python3.7",
"binary_version": "3.7.5-2~18.04.4"
},
{
"binary_name": "libpython3.7",
"binary_version": "3.7.5-2~18.04.4"
},
{
"binary_name": "libpython3.7-minimal",
"binary_version": "3.7.5-2~18.04.4"
},
{
"binary_name": "libpython3.7-stdlib",
"binary_version": "3.7.5-2~18.04.4"
},
{
"binary_name": "libpython3.7-testsuite",
"binary_version": "3.7.5-2~18.04.4"
},
{
"binary_name": "python3.7",
"binary_version": "3.7.5-2~18.04.4"
},
{
"binary_name": "python3.7-examples",
"binary_version": "3.7.5-2~18.04.4"
},
{
"binary_name": "python3.7-minimal",
"binary_version": "3.7.5-2~18.04.4"
},
{
"binary_name": "python3.7-venv",
"binary_version": "3.7.5-2~18.04.4"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:18.04:LTS",
"cves": [
{
"id": "CVE-2020-27619",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2021-3177",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
]
}
}
},
{
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "python3.8",
"purl": "pkg:deb/ubuntu/python3.8@3.8.0-3~18.04.1?arch=source&distro=bionic"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.8.0-3~18.04.1"
}
]
}
],
"versions": [
"3.8.0-3~18.04"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "idle-python3.8",
"binary_version": "3.8.0-3~18.04.1"
},
{
"binary_name": "libpython3.8",
"binary_version": "3.8.0-3~18.04.1"
},
{
"binary_name": "libpython3.8-minimal",
"binary_version": "3.8.0-3~18.04.1"
},
{
"binary_name": "libpython3.8-stdlib",
"binary_version": "3.8.0-3~18.04.1"
},
{
"binary_name": "libpython3.8-testsuite",
"binary_version": "3.8.0-3~18.04.1"
},
{
"binary_name": "python3.8",
"binary_version": "3.8.0-3~18.04.1"
},
{
"binary_name": "python3.8-examples",
"binary_version": "3.8.0-3~18.04.1"
},
{
"binary_name": "python3.8-minimal",
"binary_version": "3.8.0-3~18.04.1"
},
{
"binary_name": "python3.8-venv",
"binary_version": "3.8.0-3~18.04.1"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:18.04:LTS",
"cves": [
{
"id": "CVE-2020-27619",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2021-3177",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
]
}
}
},
{
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "python2.7",
"purl": "pkg:deb/ubuntu/python2.7@2.7.18-1~20.04.1?arch=source&distro=focal"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.7.18-1~20.04.1"
}
]
}
],
"versions": [
"2.7.17~rc1-1",
"2.7.17-1",
"2.7.17-1ubuntu5",
"2.7.17-1ubuntu6",
"2.7.18~rc1-2",
"2.7.18-1~20.04"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "idle-python2.7",
"binary_version": "2.7.18-1~20.04.1"
},
{
"binary_name": "libpython2.7",
"binary_version": "2.7.18-1~20.04.1"
},
{
"binary_name": "libpython2.7-minimal",
"binary_version": "2.7.18-1~20.04.1"
},
{
"binary_name": "libpython2.7-stdlib",
"binary_version": "2.7.18-1~20.04.1"
},
{
"binary_name": "libpython2.7-testsuite",
"binary_version": "2.7.18-1~20.04.1"
},
{
"binary_name": "python2.7",
"binary_version": "2.7.18-1~20.04.1"
},
{
"binary_name": "python2.7-examples",
"binary_version": "2.7.18-1~20.04.1"
},
{
"binary_name": "python2.7-minimal",
"binary_version": "2.7.18-1~20.04.1"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:20.04:LTS",
"cves": [
{
"id": "CVE-2019-9674",
"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": "negligible"
}
]
},
{
"id": "CVE-2019-17514",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
},
{
"type": "Ubuntu",
"score": "negligible"
}
]
},
{
"id": "CVE-2019-20907",
"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:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2020-8492",
"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": "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": "low"
}
]
},
{
"id": "CVE-2021-3177",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
]
}
}
}
],
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-4754-3"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2019-9674"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2019-17514"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2019-20907"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-8492"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-26116"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-27619"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-3177"
}
]
}
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