CVE-2021-30639 (CNNVD-202107-632)

HIGH
中文标题:
Apache Tomcat 安全漏洞
英文标题:
DoS after non-blocking IO error
CVSS分数: 7.5
发布时间: 2021-07-12 14:55:12
漏洞类型: 其他
状态: PUBLISHED
数据质量分数: 0.30
数据版本: v3
漏洞描述
中文描述:

Apache Tomcat是美国阿帕奇（Apache）基金会的一款轻量级Web应用服务器。该程序实现了对Servlet和JavaServer Page（JSP）的支持。 Apache Tomcat 存在安全漏洞，该漏洞源于作为改进非阻塞 I/O 期间错误处理的部分与请求对象关联的错误标志在请求之间不会重置。攻击者可利用该漏洞触发拒绝服务。

英文描述:

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.

CWE类型:
CWE-755
标签:
（暂无数据）
受影响产品
厂商 产品 版本 版本范围 平台 CPE
Apache Software Foundation Apache Tomcat Apache Tomcat 10 10.0.3 to 10.0.4 - - cpe:2.3:a:apache_software_foundation:apache_tomcat:apache_tomcat_10_10.0.3_to_10.0.4:*:*:*:*:*:*:*
Apache Software Foundation Apache Tomcat Apache Tomcat 9 9.0.44 - - cpe:2.3:a:apache_software_foundation:apache_tomcat:apache_tomcat_9_9.0.44:*:*:*:*:*:*:*
Apache Software Foundation Apache Tomcat Apache Tomcat 8.5 8.5.64 - - cpe:2.3:a:apache_software_foundation:apache_tomcat:apache_tomcat_8.5_8.5.64:*:*:*:*:*:*:*
apache tomcat 8.5.64 - - cpe:2.3:a:apache:tomcat:8.5.64:*:*:*:*:*:*:*
apache tomcat 9.0.44 - - cpe:2.3:a:apache:tomcat:9.0.44:*:*:*:*:*:*:*
apache tomcat 10.0.3 - - cpe:2.3:a:apache:tomcat:10.0.3:*:*:*:*:*:*:*
apache tomcat 10.0.4 - - cpe:2.3:a:apache:tomcat:10.0.4:*:*:*:*:*:*:*
mcafee epolicy_orchestrator * - - cpe:2.3:a:mcafee:epolicy_orchestrator:*:*:*:*:*:*:*:*
mcafee epolicy_orchestrator 5.10.0 - - cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:-:*:*:*:*:*:*
oracle big_data_spatial_and_graph * - - cpe:2.3:a:oracle:big_data_spatial_and_graph:*:*:*:*:*:*:*:*
解决方案
中文解决方案:
（暂无数据）
英文解决方案:
（暂无数据）
临时解决方案:
（暂无数据）
参考链接
无标题 x_refsource_MISC
cve.org
访问
[tomcat-users] 20210712 RE: [SECURITY] CVE-2021-30639 Apache Tomcat DoS mailing-list
cve.org
访问
[tomcat-dev] 20210712 RE: [SECURITY] CVE-2021-30639 Apache Tomcat DoS mailing-list
cve.org
访问
无标题 x_refsource_CONFIRM
cve.org
访问
无标题 x_refsource_CONFIRM
cve.org
访问
无标题 x_refsource_MISC
cve.org
访问
GLSA-202208-34 vendor-advisory
cve.org
访问
CVSS评分详情
7.5
HIGH
CVSS向量: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS版本: 3.1
机密性
NONE
完整性
NONE
可用性
HIGH
时间信息
发布时间:
2021-07-12 14:55:12
修改时间:
2024-08-03 22:40:31
创建时间:
2025-11-11 15:36:50
更新时间:
2025-11-11 15:56:50
利用信息
暂无可利用代码信息
数据源详情
数据源 记录ID 版本 提取时间
CVE cve_CVE-2021-30639 2025-11-11 15:20:57 2025-11-11 07:36:50
NVD nvd_CVE-2021-30639 2025-11-11 14:57:39 2025-11-11 07:45:08
CNNVD cnnvd_CNNVD-202107-632 2025-11-11 15:10:40 2025-11-11 07:56:50
版本与语言
当前版本: v3
主要语言: EN
支持语言:
EN ZH
安全公告
暂无安全公告信息
变更历史
v3 CNNVD
2025-11-11 15:56:50
vulnerability_type: 未提取 → 其他; cnnvd_id: 未提取 → CNNVD-202107-632; data_sources: ['cve', 'nvd'] → ['cnnvd', 'cve', 'nvd']
查看详细变更
  • vulnerability_type: 未提取 -> 其他
  • cnnvd_id: 未提取 -> CNNVD-202107-632
  • data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
v2 NVD
2025-11-11 15:45:08
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: 3 → 10; data_sources: ['cve'] → ['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: 3 -> 10
  • data_sources: ['cve'] -> ['cve', 'nvd']