CVE编号
CVE-2021-21401利用情况
暂无补丁情况
N/A披露时间
2021-03-24漏洞描述
Nanopb is a small code-size Protocol Buffers implementation in ansi C. In Nanopb before versions 0.3.9.8 and 0.4.5, decoding a specifically formed message can cause invalid `free()` or `realloc()` calls if the message type contains an `oneof` field, and the `oneof` directly contains both a pointer field and a non-pointer field. If the message data first contains the non-pointer field and then the pointer field, the data of the non-pointer field is incorrectly treated as if it was a pointer value. Such message data rarely occurs in normal messages, but it is a concern when untrusted data is parsed. This has been fixed in versions 0.3.9.8 and 0.4.5. See referenced GitHub Security Advisory for more information including workarounds.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/nanopb/nanopb/blob/c9124132a604047d0ef97a09c0e99cd9bed2c81... | |
| https://github.com/nanopb/nanopb/commit/e2f0ccf939d9f82931d085acb6df8e9a182a4261 | |
| https://github.com/nanopb/nanopb/issues/647 | |
| https://github.com/nanopb/nanopb/security/advisories/GHSA-7mv5-5mxh-qg88 |
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 | nanopb_project | nanopb | * |
Up to (excluding) 0.3.9.8 |
|||||
| 运行在以下环境 | |||||||||
| 应用 | nanopb_project | nanopb | * |
From (including) 0.4.0 |
Up to (excluding) 0.4.5 |
||||
- 攻击路径 网络
- 攻击复杂度 低
- 权限要求 低
- 影响范围 未更改
- 用户交互 无
- 可用性 低
- 保密性 无
- 完整性 高
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