CVE编号
CVE-2021-22212利用情况
暂无补丁情况
官方补丁披露时间
2021-06-08漏洞描述
ntpkeygen can generate keys that ntpd fails to parse. NTPsec 1.2.0 allows ntpkeygen to generate keys with '#' characters. ntpd then either pads, shortens the key, or fails to load these keys entirely, depending on the key type and the placement of the '#'. This results in the administrator not being able to use the keys as expected or the keys are shorter than expected and easier to brute-force, possibly resulting in MITM attacks between ntp clients and ntp servers. For short AES128 keys, ntpd generates a warning that it is padding them.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=1955859 | |
| https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22212.json | |
| https://gitlab.com/NTPsec/ntpsec/-/issues/699 | |
| https://lists.fedoraproject.org/archives/list/[email protected]... |
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 | ntpsec | ntpsec | 1.2.0 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.14 | ntpsec | * |
Up to (excluding) 1.2.1-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.15 | ntpsec | * |
Up to (excluding) 1.2.1-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_edge | ntpsec | * |
Up to (excluding) 1.2.1-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_34 | ntpsec | * |
Up to (excluding) 1.2.1-3.fc34 |
|||||
- 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 N/A
- 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
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