CVE-2021-33503 (CNNVD-202106-1204)
中文标题:
urllib3 资源管理错误漏洞
英文标题:
An issue was discovered in urllib3 before 1.26.5. When provided with a URL containing many @ charact...
漏洞描述
中文描述:
urllib3是一款Python HTTP库。该产品具有线程安全连接池、文件发布支持等。 Urllib3 存在资源管理错误漏洞,该漏洞源于在鉴权模块的URL中添加@参数导致,攻击者可利用该漏洞引起资源冲突导致拒绝服务。以下产品及型号会受到影响:Urllib3 0.3, 0.3.1, 0.4, 0.4.1, 1.0, 1.0.1, 1.0.2, 1.1, 1.2, 1.2.1, 1.3, 1.4, 1.5, 1.6, 1.7, 1.7.1, 1.8, 1.8.1, 1.8.2, 1.8.3, 1.9, 1.9.1, 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, 1.20, 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, 1.25.2, 1.25.3, 1.25.4, 1.25.5, 1.25.6, 1.25.7, 1.25.8, 1.25.9, 1.25.10, 1.25.11, 1.26.0, 1.26.1, 1.26.2, 1.26.3, 1.26.4。
英文描述:
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.
CWE类型:
标签:
受影响产品
| 厂商 | 产品 | 版本 | 版本范围 | 平台 | CPE |
|---|---|---|---|---|---|
| python | urllib3 | * | - | - |
cpe:2.3:a:python:urllib3:*:*:*:*:*:*:*:*
|
| fedoraproject | fedora | 33 | - | - |
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
|
| fedoraproject | fedora | 34 | - | - |
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
|
| oracle | enterprise_manager_ops_center | 12.4.0.0 | - | - |
cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:*
|
| oracle | instantis_enterprisetrack | 17.1 | - | - |
cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:*:*:*:*:*:*:*
|
| oracle | instantis_enterprisetrack | 17.2 | - | - |
cpe:2.3:a:oracle:instantis_enterprisetrack:17.2:*:*:*:*:*:*:*
|
| oracle | instantis_enterprisetrack | 17.3 | - | - |
cpe:2.3:a:oracle:instantis_enterprisetrack:17.3:*:*:*:*:*:*:*
|
| oracle | zfs_storage_appliance_kit | 8.8 | - | - |
cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*
|
解决方案
中文解决方案:
英文解决方案:
临时解决方案:
CVSS评分详情
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
时间信息
利用信息
数据源详情
| 数据源 | 记录ID | 版本 | 提取时间 |
|---|---|---|---|
| CVE | cve_CVE-2021-33503 |
2025-11-11 15:20:59 | 2025-11-11 07:36:53 |
| NVD | nvd_CVE-2021-33503 |
2025-11-11 14:57:38 | 2025-11-11 07:45:12 |
| CNNVD | cnnvd_CNNVD-202106-1204 |
2025-11-11 15:10:39 | 2025-11-11 07:56:46 |
版本与语言
安全公告
变更历史
查看详细变更
- vulnerability_type: 未提取 -> 资源管理错误
- cnnvd_id: 未提取 -> CNNVD-202106-1204
- data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
查看详细变更
- severity: SeverityLevel.MEDIUM -> SeverityLevel.HIGH
- cvss_score: 未提取 -> 7.5
- cvss_vector: NOT_EXTRACTED -> CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- cvss_version: NOT_EXTRACTED -> 3.1
- affected_products_count: 0 -> 8
- data_sources: ['cve'] -> ['cve', 'nvd']