中危 nlnetlabs unbound 未加控制的资源消耗（资源穷尽）
CVE编号
CVE-2022-3204利用情况
暂无补丁情况
官方补丁披露时间
2022-09-26漏洞描述
A vulnerability named 'Non-Responsive Delegation Attack' (NRDelegation Attack) has been discovered in various DNS resolving software. The NRDelegation Attack works by having a malicious delegation with a considerable number of non responsive nameservers. The attack starts by querying a resolver for a record that relies on those unresponsive nameservers. The attack can cause a resolver to spend a lot of time/resources resolving records under a malicious delegation point where a considerable number of unresponsive NS records reside. It can trigger high CPU usage in some resolver implementations that continually look in the cache for resolved NS records in that delegation. This can lead to degraded performance and eventually denial of service in orchestrated attacks. Unbound does not suffer from high CPU usage, but resources are still needed for resolving the malicious delegation. Unbound will keep trying to resolve the record until hard limits are reached. Based on the nature of the attack and the replies, different limits could be reached. From version 1.16.3 on, Unbound introduces fixes for better performance when under load, by cutting opportunistic queries for nameserver discovery and DNSKEY prefetching and limiting the number of times a delegation point can issue a cache lookup for missing records.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 | nlnetlabs | unbound | * | Up to (including) 1.16.2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.17 | unbound | * | Up to (excluding) 1.16.3-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.18 | unbound | * | Up to (excluding) 1.16.3-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_edge | unbound | * | Up to (excluding) 1.16.3-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | amazon_2022 | unbound | * | Up to (excluding) 1.16.3-2.amzn2022 | |||||
| 运行在以下环境 | |||||||||
| 系统 | amazon_2023 | unbound | * | Up to (excluding) 1.16.3-2.amzn2023.0.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | anolis_os_8 | unbound-libs | * | Up to (excluding) 1.16.2-3 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | unbound | * | Up to (excluding) 1.9.0-2+deb10u3 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | unbound | * | Up to (excluding) 1.13.1-1+deb11u1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_12 | unbound | * | Up to (excluding) 1.16.3-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | unbound | * | Up to (excluding) 1.16.3-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_35 | unbound-libs-debuginfo | * | Up to (excluding) 1.16.3-1.fc35 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_36 | unbound-libs-debuginfo | * | Up to (excluding) 1.16.3-1.fc36 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_37 | unbound-libs-debuginfo | * | Up to (excluding) 1.16.3-1.fc37 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_aarch64_V10SP1 | python3-unbound | * | Up to (excluding) 1.11.0-2.p01.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_aarch64_V10SP2 | python3-unbound | * | Up to (excluding) 1.11.0-2.p02.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_loongarch64_V10SP1 | python3-unbound | * | Up to (excluding) 1.11.0-2.p02.a.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_x86_64_V10SP1 | python3-unbound | * | Up to (excluding) 1.11.0-2.p02.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_x86_64_V10SP2 | python3-unbound | * | Up to (excluding) 1.11.0-2.p02.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_x86_64_V10SP3 | python3-unbound | * | Up to (excluding) 1.11.0-2.p01.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | oracle_8 | oraclelinux-release | * | Up to (excluding) 1.16.2-5.el8 | |||||
| 运行在以下环境 | |||||||||
| 系统 | oracle_9 | oraclelinux-release | * | Up to (excluding) 1.16.2-3.el9 | |||||
| 运行在以下环境 | |||||||||
| 系统 | redhat_8 | unbound-debugsource | * | Up to (excluding) 1.16.2-5.el8 | |||||
| 运行在以下环境 | |||||||||
| 系统 | redhat_9 | python3-unbound | * | Up to (excluding) 1.16.2-3.el9 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_18.04 | unbound | * | Up to (excluding) 1.6.7-1ubuntu2.6 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_20.04 | unbound | * | Up to (excluding) 1.9.4-2ubuntu1.4 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_22.04 | unbound | * | Up to (excluding) 1.13.1-1ubuntu5.3 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_22.10 | unbound | * | Up to (excluding) 1.16.2-1ubuntu0.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | unionos_a | unbound | * | Up to (excluding) unbound-1.16.2-5.uelc20.01 | |||||
| 运行在以下环境 | |||||||||
| 系统 | unionos_d | unbound | * | Up to (excluding) 1.9.0.5-deepin1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | unionos_e | unbound | * | Up to (excluding) 1.11.0-8.uel20 | |||||
- 攻击路径 本地
- 攻击复杂度 复杂
- 权限要求 无需权限
- 影响范围 越权影响
- 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 无影响
- 服务器危害 无影响
- 全网数量 N/A
| 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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