CVE编号
CVE-2021-3448利用情况
暂无补丁情况
官方补丁披露时间
2021-04-09漏洞描述
A flaw was found in dnsmasq in versions before 2.85. When configured to use a specific server for a given network interface, dnsmasq uses a fixed port while forwarding queries. An attacker on the network, able to find the outgoing port used by dnsmasq, only needs to guess the random transmission ID to forge a reply and get it accepted by dnsmasq. This flaw makes a DNS Cache Poisoning attack much easier. The highest threat from this vulnerability is to data integrity.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。
参考链接 |
|
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1939368 | |
| https://lists.fedoraproject.org/archives/list/[email protected]... | |
| https://lists.fedoraproject.org/archives/list/[email protected]... | |
| https://lists.fedoraproject.org/archives/list/[email protected]... | |
| https://security.gentoo.org/glsa/202105-20 | |
| https://www.oracle.com/security-alerts/cpujan2022.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 | thekelleys | dnsmasq | * |
Up to (excluding) 2.85 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alibaba_cloud_linux_2.1903 | dnsmasq | * |
Up to (excluding) 3.1.18-1.1.al8 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.10 | dnsmasq | * |
Up to (excluding) 2.85-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.11 | dnsmasq | * |
Up to (excluding) 2.85-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.12 | dnsmasq | * |
Up to (excluding) 2.85-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.13 | dnsmasq | * |
Up to (excluding) 2.85-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.14 | dnsmasq | * |
Up to (excluding) 2.85-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.15 | dnsmasq | * |
Up to (excluding) 2.85-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_edge | dnsmasq | * |
Up to (excluding) 2.85-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | centos_8 | dnsmasq | * |
Up to (excluding) 3.1.18-1.el8_4 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | dnsmasq | * |
Up to (excluding) 2.80-1+deb10u1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | dnsmasq | * |
Up to (excluding) 2.84-1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_9 | dnsmasq | * |
Up to (excluding) 2.76-5+deb9u2 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | dnsmasq | * |
Up to (excluding) 2.84-1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_32 | dnsmasq | * |
Up to (excluding) 2.85-1.fc32 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_33 | dnsmasq | * |
Up to (excluding) 2.85-1.fc33 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_34 | dnsmasq | * |
Up to (excluding) 2.85-1.fc34 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.2 | dnsmasq | * |
Up to (excluding) 2.86-lp152.7.6.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.3 | dnsmasq | * |
Up to (excluding) 2.86-7.14.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | oracle_8 | dnsmasq | * |
Up to (excluding) 3.1.18-1.0.1.el8_4 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | redhat_8 | dnsmasq | * |
Up to (excluding) 3.1.18-1.el8_4 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_18.04 | dnsmasq | * |
Up to (excluding) 2.79-1ubuntu0.4 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_18.04.5_lts | dnsmasq | * |
Up to (excluding) 2.79-1ubuntu0.4 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_20.04 | dnsmasq | * |
Up to (excluding) 2.80-1.1ubuntu1.4 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_21.04 | dnsmasq | * |
Up to (excluding) 2.84-1ubuntu2.1 |
|||||
- 攻击路径 远程
- 攻击复杂度 困难
- 权限要求 无需权限
- 影响范围 越权影响
- EXP成熟度 N/A
- 补丁情况 官方补丁
- 数据保密性 无影响
- 数据完整性 传输被破坏
- 服务器危害 无影响
- 全网数量 N/A
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