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。
参考链接 |
|
|---|---|
| https://github.com/advisories/GHSA-q2q7-5pp4-w6pg | |
| https://github.com/urllib3/urllib3/commit/2d4a3fee6de2fa45eb82169361918f759269b4ec | |
| https://lists.fedoraproject.org/archives/list/[email protected]... | |
| https://lists.fedoraproject.org/archives/list/[email protected]... | |
| https://security.gentoo.org/glsa/202107-36 | |
| https://www.oracle.com/security-alerts/cpuoct2021.html |
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 | 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) 1.26.4-1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_9 | python-urllib3 | * |
Up to (excluding) 1.19.1-1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | python-urllib3 | * |
Up to (excluding) 1.26.4-1 |
|||||
| 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) 1.25.10-5.fc34 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.3 | python-urllib3 | * |
Up to (excluding) 1.25.10-4.3.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | oracle_8 | python-urllib3 | * |
Up to (excluding) 3.9.6-2.module+el8.5.0+20364+c7fe1181 |
|||||
- 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
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