CVE编号
CVE-2021-36159利用情况
暂无补丁情况
官方补丁披露时间
2021-08-03漏洞描述
libfetch before 2021-07-26, as used in apk-tools, xbps, and other products, mishandles numeric strings for the FTP and HTTP protocols. The FTP passive mode implementation allows an out-of-bounds read because strtol is used to parse the relevant numbers into address bytes. It does not check if the line ends prematurely. If it does, the for-loop condition checks for the '\0' terminator one byte too late.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://github.com/freebsd/freebsd-src/commits/main/lib/libfetch | |
| https://gitlab.alpinelinux.org/alpine/apk-tools/-/issues/10749 | |
| https://lists.apache.org/thread.html/r61db8e7dcb56dc000a5387a88f7a473bacec5ee... | |
| https://lists.apache.org/thread.html/r61db8e7dcb56dc000a5387a88f7a473bacec5ee... | |
| https://lists.apache.org/thread.html/rbf4ce74b0d1fa9810dec50ba3ace0caeea677af... | |
| https://lists.apache.org/thread.html/rbf4ce74b0d1fa9810dec50ba3ace0caeea677af... |
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 | freebsd | libfetch | * |
Up to (excluding) 2021-07-26 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.10 | apk-tools | * |
Up to (excluding) 2.10.7-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.11 | apk-tools | * |
Up to (excluding) 2.10.7-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.12 | apk-tools | * |
Up to (excluding) 2.10.7-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.13 | apk-tools | * |
Up to (excluding) 2.12.6-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.14 | apk-tools | * |
Up to (excluding) 2.12.6-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.15 | apk-tools | * |
Up to (excluding) 2.12.6-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_edge | apk-tools | * |
Up to (excluding) 2.12.6-r0 |
|||||
- 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 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 N/A
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