131 lines
3.2 KiB
JSON
131 lines
3.2 KiB
JSON
{
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"schema_version": "1.7.0",
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"id": "UBUNTU-CVE-2021-33503",
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"details": "An issue was discovered in urllib3 before 1.26.5. When provided with a URL containing many @ characters in the authority component, the authority regular expression exhibits catastrophic backtracking, causing a denial of service if a URL were passed as a parameter or redirected to via an HTTP redirect.",
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"aliases": [],
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"upstream": [
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"CVE-2021-33503"
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],
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"related": [
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"USN-5812-1"
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],
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"severity": [
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{
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"type": "CVSS_V3",
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"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
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},
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{
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"type": "Ubuntu",
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"score": "low"
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}
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],
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"published": "2021-06-29T11:15:00Z",
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"modified": "2025-07-18T16:46:51Z",
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"affected": [
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{
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"package": {
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"ecosystem": "Ubuntu:20.04:LTS",
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"name": "python-pip",
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"purl": "pkg:deb/ubuntu/python-pip@20.0.2-5ubuntu1.7?arch=source&distro=focal"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "0"
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},
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{
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"fixed": "20.0.2-5ubuntu1.7"
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}
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]
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}
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],
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"versions": [
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"18.1-5",
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"18.1-5build1",
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"18.1-5ubuntu1",
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"20.0.2-2",
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"20.0.2-4",
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"20.0.2-5",
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"20.0.2-5ubuntu1",
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"20.0.2-5ubuntu1.1",
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"20.0.2-5ubuntu1.3",
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"20.0.2-5ubuntu1.4",
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"20.0.2-5ubuntu1.5",
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"20.0.2-5ubuntu1.6"
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],
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"ecosystem_specific": {
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"binaries": [
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{
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"binary_name": "python-pip-whl",
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"binary_version": "20.0.2-5ubuntu1.7"
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},
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{
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"binary_name": "python3-pip",
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"binary_version": "20.0.2-5ubuntu1.7"
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}
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],
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"availability": "No subscription required"
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}
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},
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{
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"package": {
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"ecosystem": "Ubuntu:20.04:LTS",
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"name": "python-urllib3",
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"purl": "pkg:deb/ubuntu/python-urllib3@1.25.8-2ubuntu0.2?arch=source&distro=focal"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "0"
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},
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{
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"fixed": "1.25.8-2ubuntu0.2"
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}
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]
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}
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],
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"versions": [
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"1.24.1-1ubuntu1",
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"1.24.1-1ubuntu2",
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"1.25.8-1",
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"1.25.8-2",
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"1.25.8-2ubuntu0.1"
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],
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"ecosystem_specific": {
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"binaries": [
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{
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"binary_name": "python3-urllib3",
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"binary_version": "1.25.8-2ubuntu0.2"
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}
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],
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"availability": "No subscription required"
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}
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}
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],
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"references": [
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{
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"type": "REPORT",
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"url": "https://ubuntu.com/security/CVE-2021-33503"
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},
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{
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"type": "REPORT",
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"url": "https://github.com/advisories/GHSA-q2q7-5pp4-w6pg"
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},
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{
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"type": "REPORT",
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"url": "https://github.com/urllib3/urllib3/commit/2d4a3fee6de2fa45eb82169361918f759269b4ec"
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},
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{
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"type": "ADVISORY",
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"url": "https://ubuntu.com/security/notices/USN-5812-1"
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},
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{
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"type": "REPORT",
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"url": "https://www.cve.org/CVERecord?id=CVE-2021-33503"
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}
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]
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} |