低危 python urllib3 未加控制的资源消耗（资源穷尽）
CVE编号
CVE-2021-33503利用情况
暂无补丁情况
官方补丁披露时间
2021-06-29漏洞描述
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.解决建议
建议您更新当前系统或软件至最新版，完成漏洞的修复。受影响软件情况
| # | 类型 | 厂商 | 产品 | 版本 | 影响面 | ||||
| 1 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 运行在以下环境 | |||||||||
| 应用 | python | urllib3 | * | Up to (excluding) 1.26.5 | |||||
| 运行在以下环境 | |||||||||
| 系统 | amazon_2 | python-urllib3 | * | Up to (excluding) 1.25.9-1.amzn2.0.2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | anolis_os_8 | python39-mod_wsgi | * | Up to (excluding) 4.7.1-4 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | python-urllib3 | * | Up to (excluding) 1.24.1-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | python-urllib3 | * | Up to (excluding) 1.26.5-1~exp1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_12 | python-urllib3 | * | Up to (excluding) 1.26.5-1~exp1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_9 | python-urllib3 | * | Up to (including) 1.19.1-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | python-urllib3 | * | Up to (excluding) 1.26.5-1~exp1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_33 | python-urllib3 | * | Up to (excluding) 1.25.8-5.fc33 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_34 | python-urllib3 | * | Up to (excluding) 1.25.10-3.fc34 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_aarch64_V10 | python-pip-help | * | Up to (excluding) 20.2.2-6.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_aarch64_V10SP1 | python2-urllib3 | * | Up to (excluding) 20.2.2-6.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_aarch64_V10SP2 | python2-urllib3 | * | Up to (excluding) 20.2.2-6.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_aarch64_V10SP3 | python-pip-help | * | Up to (excluding) 20.2.2-6.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_loongarch64_V10SP1 | python-pip-help | * | Up to (excluding) 20.2.2-6.a.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_loongarch64_V10SP3 | python-pip-help | * | Up to (excluding) 20.2.2-6.a.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_x86_64_V10 | python-pip-help | * | Up to (excluding) 20.2.2-6.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_x86_64_V10SP1 | python2-urllib3 | * | Up to (excluding) 20.2.2-6.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_x86_64_V10SP2 | python2-urllib3 | * | Up to (excluding) 20.2.2-6.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_x86_64_V10SP3 | python-pip-help | * | Up to (excluding) 20.2.2-6.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.3 | python3-urllib3 | * | Up to (excluding) 1.25.10-4.3.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | oracle_8 | oraclelinux-release | * | Up to (excluding) 0.13.0-3.module+el8.2.0+5579+085cd3bd | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_20.04 | python-urllib3 | * | Up to (excluding) 20.0.2-5ubuntu1.7 | |||||
| 运行在以下环境 | |||||||||
| 系统 | unionos_e | python-pip | * | Up to (excluding) python-pip-20.2.2-6.uel20 | |||||
- 攻击路径 远程
- 攻击复杂度 容易
- 权限要求 无需权限
- 影响范围 有限影响
- EXP成熟度 N/A
- 补丁情况 官方补丁
- 数据保密性 无影响
- 数据完整性 无影响
- 服务器危害 DoS
- 全网数量 N/A
| CWE-ID | 漏洞类型 |
| CWE-400 | 未加控制的资源消耗（资源穷尽） |
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