CVE-2021-33503
published 2021-06-29CVE-2021-33503: 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…
high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
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.
Affected
18 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | python-urllib3 | < python-urllib3 1.26.5-1~exp1 (bookworm) | python-urllib3 1.26.5-1~exp1 (bookworm) |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| msrc | azl3_mozjs_102.15.1-1_on_azure_linux_3.0 | — | — |
| msrc | cbl2_python-urllib3_1.25.9-3_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_python-virtualenv_20.26.6-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl_mariner_1.0_arm | — | — |
| msrc | cbl_mariner_1.0_x64 | — | — |
| msrc | cbl_mariner_2.0_arm | — | — |
| msrc | cbl_mariner_2.0_x64 | — | — |
| msrc | cm1_python-urllib3_1.25.9-2_on_cbl_mariner_1.0 | — | — |
| oracle | enterprise_manager_ops_center | — | — |
| oracle | instantis_enterprisetrack | — | — |
| oracle | instantis_enterprisetrack | — | — |
| oracle | instantis_enterprisetrack | — | — |
| oracle | zfs_storage_appliance_kit | — | — |
| python | urllib3 | >= 1.25.4 < 1.26.5 | 1.26.5 |
| urllib3 | urllib3 | >= 1.25.4 < 1.26.5 | 1.26.5 |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
ghsa7.5HIGH
osv7.5HIGH