低危 freebsd freebsd 信息暴露
CVE编号
CVE-2020-25578利用情况
暂无补丁情况
官方补丁披露时间
2021-03-27漏洞描述
In FreeBSD 12.2-STABLE before r368969, 11.4-STABLE before r369047, 12.2-RELEASE before p3, 12.1-RELEASE before p13 and 11.4-RELEASE before p7 several file systems were not properly initializing the d_off field of the dirent structures returned by VOP_READDIR. In particular, tmpfs(5), smbfs(5), autofs(5) and mqueuefs(5) were failing to do so. As a result, eight uninitialized kernel stack bytes may be leaked to userspace by these file systems.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://security.FreeBSD.org/advisories/FreeBSD-SA-21:01.fsdisclosure.asc | |
| https://security.netapp.com/advisory/ntap-20210423-0002/ |
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 | |||||||||
| 系统 | debian_10 | kfreebsd-10 | * | Up to (including) 10.3~svn300087-5 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_9 | kfreebsd-10 | * | Up to (including) 10.3~svn300087-3 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | kfreebsd-10 | * | Up to (including) 10.3~svn300087+ds1-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | freebsd | freebsd | 11.4 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | freebsd | freebsd | 12.1 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | freebsd | freebsd | 12.2 | - | |||||
- 攻击路径 本地
- 攻击复杂度 容易
- 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 N/A
- 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-200 | 信息暴露 |
| CWE-665 | 初始化不恰当 |
Exp相关链接
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