CVE编号
CVE-2018-20217利用情况
暂无补丁情况
官方补丁披露时间
2018-12-27漏洞描述
在1.17之前，在MIT Kerberos 5（aka krb5）的KDC中发现了一个Reachable Assertion问题。如果攻击者可以使用较旧的加密类型（single-DES, triple-DES, 或者RC4）获取krbtgt票证，则攻击者可以通过发出S4U2Self请求来使KDC崩溃。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 |
|
|---|---|
| http://krbdev.mit.edu/rt/Ticket/Display.html?id=8763 | |
| https://github.com/krb5/krb5/commit/5e6d1796106df8ba6bc1973ee0917c170d929086 | |
| https://lists.debian.org/debian-lts-announce/2019/01/msg00020.html | |
| https://lists.debian.org/debian-lts-announce/2021/09/msg00019.html | |
| https://lists.fedoraproject.org/archives/list/[email protected]... | |
| https://security.netapp.com/advisory/ntap-20190416-0006/ |
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 | mit | kerberos | * |
Up to (excluding) 5-1.17 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.10 | krb5 | * |
Up to (excluding) 1.15.4-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.11 | krb5 | * |
Up to (excluding) 1.15.4-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.12 | krb5 | * |
Up to (excluding) 1.15.4-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.13 | krb5 | * |
Up to (excluding) 1.15.4-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.14 | krb5 | * |
Up to (excluding) 1.15.4-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.15 | krb5 | * |
Up to (excluding) 1.15.4-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.6 | krb5 | * |
Up to (excluding) 1.14.3-r3 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.7 | krb5 | * |
Up to (excluding) 1.15.4-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.8 | krb5 | * |
Up to (excluding) 1.15.4-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.9 | krb5 | * |
Up to (excluding) 1.15.4-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_edge | krb5 | * |
Up to (excluding) 1.15.4-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | amazon_AMI | krb5 | * |
Up to (excluding) 1.15.1-46.48.amzn1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_8 | krb5 | * |
Up to (excluding) 1.12.1+dfsg-19+deb8u2 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_9 | krb5 | * |
Up to (excluding) 1.15-1+deb9u3 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_28 | krb5 | * |
Up to (excluding) 1.16.1-24.fc28 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_29 | krb5 | * |
Up to (excluding) 1.16.1-22.fc29 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.0 | krb5 | * |
Up to (excluding) 1.15.2-lp150.5.3.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_42.3 | krb5 | * |
Up to (excluding) 1.12.5-22.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP3 | krb5 | * |
Up to (excluding) 1.12.5-40.31.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP4 | krb5 | * |
Up to (excluding) 1.12.5-40.31.1 |
|||||
- 攻击路径 远程
- 攻击复杂度 困难
- 权限要求 普通权限
- 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
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