中危 apache tomcat 对异常条件的处理不恰当
CVE编号
CVE-2021-30639利用情况
暂无补丁情况
官方补丁披露时间
2021-07-12漏洞描述
A vulnerability in Apache Tomcat allows an attacker to remotely trigger a denial of service. An error introduced as part of a change to improve error handling during non-blocking I/O meant that the error flag associated with the Request object was not reset between requests. This meant that once a non-blocking I/O error occurred, all future requests handled by that request object would fail. Users were able to trigger non-blocking I/O errors, e.g. by dropping a connection, thereby creating the possibility of triggering a DoS. Applications that do not use non-blocking I/O are not exposed to this vulnerability. This issue affects Apache Tomcat 10.0.3 to 10.0.4; 9.0.44; 8.5.64.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 | apache | tomcat | 10.0.3 | - | |||||
| 运行在以下环境 | |||||||||
| 应用 | apache | tomcat | 10.0.4 | - | |||||
| 运行在以下环境 | |||||||||
| 应用 | apache | tomcat | 8.5.64 | - | |||||
| 运行在以下环境 | |||||||||
| 应用 | apache | tomcat | 9.0.44 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | tomcat9 | * | Up to (excluding) 9.0.31-1~deb10u6 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | tomcat9 | * | Up to (excluding) 9.0.43-2~deb11u6 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_12 | tomcat9 | * | Up to (excluding) 9.0.70-2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | tomcat9 | * | Up to (excluding) 9.0.70-2 | |||||
- 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 未验证
- 补丁情况 官方补丁
- 数据保密性 数据泄露
- 数据完整性 传输被破坏
- 服务器危害 服务器失陷
- 全网数量 N/A
| CWE-ID | 漏洞类型 |
| CWE-755 | 对异常条件的处理不恰当 |
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