gsd-2021-33503
Vulnerability from gsd
Modified
2023-12-13 01:23
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.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2021-33503",
"description": "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.",
"id": "GSD-2021-33503",
"references": [
"https://www.suse.com/security/cve/CVE-2021-33503.html",
"https://access.redhat.com/errata/RHSA-2021:4702",
"https://access.redhat.com/errata/RHSA-2021:4162",
"https://access.redhat.com/errata/RHSA-2021:4160",
"https://access.redhat.com/errata/RHSA-2021:3473",
"https://access.redhat.com/errata/RHSA-2021:3254",
"https://advisories.mageia.org/CVE-2021-33503.html",
"https://security.archlinux.org/CVE-2021-33503",
"https://linux.oracle.com/cve/CVE-2021-33503.html",
"https://ubuntu.com/security/CVE-2021-33503"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2021-33503"
],
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"id": "GSD-2021-33503",
"modified": "2023-12-13T01:23:18.123679Z",
"schema_version": "1.4.0"
}
},
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"name": "FEDORA-2021-a6bde7ab18",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FMUGWEAUYGGHTPPXT6YBD53WYXQGVV73/"
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},
{
"name": "GLSA-202107-36",
"refsource": "GENTOO",
"url": "https://security.gentoo.org/glsa/202107-36"
},
{
"name": "https://www.oracle.com/security-alerts/cpuoct2021.html",
"refsource": "MISC",
"url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
},
{
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"url": "https://github.com/advisories/GHSA-q2q7-5pp4-w6pg"
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{
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"url": "https://github.com/urllib3/urllib3/commit/2d4a3fee6de2fa45eb82169361918f759269b4ec"
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"gitlab.com": {
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{
"affected_range": "\u003c1.25.4||\u003e=1.26.0,\u003c1.26.5",
"affected_versions": "All versions before 1.25.4, all versions starting from 1.26.0 before 1.26.5",
"cvss_v2": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
"cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"cwe_ids": [
"CWE-1035",
"CWE-400",
"CWE-937"
],
"date": "2023-08-24",
"description": "An issue was discovered in urllib3, 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.",
"fixed_versions": [
"1.25.4",
"1.26.5"
],
"identifier": "CVE-2021-33503",
"identifiers": [
"CVE-2021-33503",
"GHSA-q2q7-5pp4-w6pg"
],
"not_impacted": "All versions starting from 1.25.4 before 1.26.0, all versions starting from 1.26.5",
"package_slug": "pypi/urllib3",
"pubdate": "2021-06-29",
"solution": "Upgrade to versions 1.25.4, 1.26.5 or above.",
"title": "Uncontrolled Resource Consumption",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2021-33503"
],
"uuid": "e911aff3-e47b-41b4-a4fd-3e91a0cae9a3"
}
]
},
"nvd.nist.gov": {
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}
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},
"impact": {
"baseMetricV2": {
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"cvssV2": {
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"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 5.0,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": false
},
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"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
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"exploitabilityScore": 3.9,
"impactScore": 3.6
}
},
"lastModifiedDate": "2023-08-24T13:42Z",
"publishedDate": "2021-06-29T11:15Z"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.