CVE编号
CVE-2021-3420利用情况
暂无补丁情况
官方补丁披露时间
2021-03-06漏洞描述
A flaw was found in newlib in versions prior to 4.0.0. Improper overflow validation in the memory allocation functions mEMALIGn, pvALLOc, nano_memalign, nano_valloc, nano_pvalloc could case an integer overflow, leading to an allocation of a small buffer and then to a heap-based buffer overflow.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=1934088 | |
| https://lists.fedoraproject.org/archives/list/[email protected]... | |
| https://lists.fedoraproject.org/archives/list/[email protected]... | |
| 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 | newlib_project | newlib | * |
Up to (excluding) 4.0.0 |
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| 运行在以下环境 | |||||||||
| 系统 | alpine_3.14 | newlib | * |
Up to (excluding) 4.1.0-r0 |
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| 运行在以下环境 | |||||||||
| 系统 | alpine_3.15 | newlib | * |
Up to (excluding) 4.1.0-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_edge | newlib | * |
Up to (excluding) 4.1.0-r0 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | newlib | * |
Up to (excluding) 3.1.0.20181231-1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | newlib | * |
Up to (excluding) 3.3.0-1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_12 | newlib | * |
Up to (excluding) 3.3.0-1.3 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_9 | newlib | * |
Up to (excluding) 2.4.0.20160527-2 |
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| 运行在以下环境 | |||||||||
| 系统 | debian_sid | newlib | * |
Up to (excluding) 3.3.0-1.3 |
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| 运行在以下环境 | |||||||||
| 系统 | fedora_32 | newlib | * |
Up to (excluding) 4.1.0-1.fc32 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_33 | newlib | * |
Up to (excluding) 4.1.0-1.fc33 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_34 | newlib | * |
Up to (excluding) 4.1.0-1.fc34 |
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- 攻击路径 远程
- 攻击复杂度 容易
- 权限要求 无需权限
- 影响范围 全局影响
- 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 传输被破坏
- 服务器危害 服务器失陷
- 全网数量 N/A
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