低危 Knot Resolver拒绝服务漏洞
CVE编号
CVE-2020-12667利用情况
暂无补丁情况
官方补丁披露时间
2020-05-20漏洞描述
Knot Resolver是捷克共和国CZ.NIC协会的一款使用C语言和LuaJIT编写的开源缓存DNS解析器。 Knot Resolver 5.1.1之前版本中存在安全漏洞。攻击者可借助特制DNS响应利用该漏洞造成拒绝服务。解决建议
目前厂商已发布升级补丁以修复漏洞，补丁获取链接：https://www.knot-resolver.cz/2020-05-19-knot-resolver-5.1.1.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 | nic | knot_resolver | * | Up to (excluding) 5.1.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.11 | knot-resolver | * | Up to (excluding) 4.3.0-r3 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.12 | knot-resolver | * | Up to (excluding) 5.1.1-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.13 | knot-resolver | * | Up to (excluding) 5.1.1-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.14 | knot-resolver | * | Up to (excluding) 5.1.1-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.15 | knot-resolver | * | Up to (excluding) 5.1.1-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.16 | knot-resolver | * | Up to (excluding) 5.1.1-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.17 | knot-resolver | * | Up to (excluding) 5.1.1-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.18 | knot-resolver | * | Up to (excluding) 5.1.1-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_edge | knot-resolver | * | Up to (excluding) 5.1.1-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | knot-resolver | * | Up to (including) 3.2.1-3 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | knot-resolver | * | Up to (excluding) 5.1.1-0.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_12 | knot-resolver | * | Up to (excluding) 5.1.1-0.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | knot-resolver | * | Up to (excluding) 5.1.1-0.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_30 | knot-resolver-debuginfo | * | Up to (excluding) 5.1.1-1.fc30 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_31 | knot-resolver-debuginfo | * | Up to (excluding) 5.1.3-1.fc31 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_32 | knot-resolver-debuginfo | * | Up to (excluding) 5.1.1-1.fc32 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_EPEL_7 | knot-resolver-devel | * | Up to (excluding) 5.1.1-1.el7 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_EPEL_8 | knot-resolver-debuginfo | * | Up to (excluding) 5.1.1-1.el8 | |||||
- 攻击路径 远程
- 攻击复杂度 复杂
- 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 无影响
- 数据完整性 无影响
- 服务器危害 无影响
- 全网数量 100
| 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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