pysec-2021-108
Vulnerability from pysec
Published
2021-06-29 11:15
Modified
2021-07-02 18:56
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
{ affected: [ { package: { ecosystem: "PyPI", name: "urllib3", purl: "pkg:pypi/urllib3", }, ranges: [ { events: [ { introduced: "0", }, { fixed: "2d4a3fee6de2fa45eb82169361918f759269b4ec", }, ], repo: "https://github.com/urllib3/urllib3", type: "GIT", }, { events: [ { introduced: "0", }, { fixed: "1.26.5", }, ], type: "ECOSYSTEM", }, ], versions: [ "0.2", "0.3", "0.3.1", "0.4.0", "0.4.1", "1.0", "1.0.1", "1.0.2", "1.1", "1.10", "1.10.1", "1.10.2", "1.10.3", "1.10.4", "1.11", "1.12", "1.13", "1.13.1", "1.14", "1.15", "1.15.1", "1.16", "1.17", "1.18", "1.18.1", "1.19", "1.19.1", "1.2", "1.2.1", "1.2.2", "1.20", "1.21", "1.21.1", "1.22", "1.23", "1.24", "1.24.1", "1.24.2", "1.24.3", "1.25", "1.25.1", "1.25.10", "1.25.11", "1.25.2", "1.25.3", "1.25.4", "1.25.5", "1.25.6", "1.25.7", "1.25.8", "1.25.9", "1.26.0", "1.26.1", "1.26.2", "1.26.3", "1.26.4", "1.3", "1.4", "1.5", "1.6", "1.7", "1.7.1", "1.8", "1.8.2", "1.8.3", "1.9", "1.9.1", ], }, ], aliases: [ "CVE-2021-33503", "GHSA-q2q7-5pp4-w6pg", ], 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.", id: "PYSEC-2021-108", modified: "2021-07-02T18:56:20.858344Z", published: "2021-06-29T11:15:00Z", references: [ { type: "ADVISORY", url: "https://github.com/advisories/GHSA-q2q7-5pp4-w6pg", }, { type: "FIX", url: "https://github.com/urllib3/urllib3/commit/2d4a3fee6de2fa45eb82169361918f759269b4ec", }, ], }
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Sightings
Author | Source | Type | Date |
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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.