CVE-2025-67725
中文标题:
（暂无数据）
英文标题:
Tornado is Vulnerable to Quadratic DoS via Repeated Header Coalescing
漏洞描述
中文描述:
（暂无数据）
英文描述:
Tornado is a Python web framework and asynchronous networking library. In versions 6.5.2 and below, a single maliciously crafted HTTP request can block the server's event loop for an extended period, caused by the HTTPHeaders.add method. The function accumulates values using string concatenation when the same header name is repeated, causing a Denial of Service (DoS). Due to Python string immutability, each concatenation copies the entire string, resulting in O(n²) time complexity. The severity can vary from high if max_header_size has been increased from its default, to low if it has its default value of 64KB. This issue is fixed in version 6.5.3.
CWE类型:
标签:
受影响产品
| 厂商 | 产品 | 版本 | 版本范围 | 平台 | CPE |
|---|---|---|---|---|---|
| tornadoweb | tornado | < 6.5.3 | - | - |
cpe:2.3:a:tornadoweb:tornado:<_6.5.3:*:*:*:*:*:*:*
|
| tornadoweb | tornado | * | - | - |
cpe:2.3:a:tornadoweb:tornado:*:*:*:*:*:*:*:*
|
解决方案
中文解决方案:
英文解决方案:
临时解决方案:
参考链接
cve.org
cve.org
cve.org
CVSS评分详情
3.1 (cna)
HIGHCVSS: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-2025-67725 |
2025-12-19 03:24:11 | 2026-01-12 02:12:27 |
| NVD | nvd_CVE-2025-67725 |
2025-12-23 04:10:44 | 2026-01-12 02:28:08 |
版本与语言
安全公告
变更历史
查看详细变更
- affected_products_count: 1 -> 2
- data_sources: ['cve'] -> ['cve', 'nvd']