microsoft azure_rtos_filex 整数溢出或超界折返
CVE编号
CVE-2022-39343利用情况
暂无补丁情况
N/A披露时间
2022-11-08漏洞描述
Azure RTOS FileX is a FAT-compatible file system that’s fully integrated with Azure RTOS ThreadX. In versions before 6.2.0, the Fault Tolerant feature of Azure RTOS FileX includes integer under and overflows which may be exploited to achieve buffer overflow and modify memory contents. When a valid log file with correct ID and checksum is detected by the `_fx_fault_tolerant_enable` function an attempt to recover the previous failed write operation is taken by call of `_fx_fault_tolerant_apply_logs`. This function iterates through the log entries and performs required recovery operations. When properly crafted a log including entries of type `FX_FAULT_TOLERANT_DIR_LOG_TYPE` may be utilized to introduce unexpected behavior. This issue has been patched in version 6.2.0. A workaround to fix line 218 in fx_fault_tolerant_apply_logs.c is documented in the GHSA.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/azure-rtos/filex/blob/master/common/src/fx_fault_tolerant_... | |
| https://github.com/azure-rtos/filex/security/advisories/GHSA-8jqf-wjhq-4w9f |
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 | microsoft | azure_rtos_filex | * | Up to (excluding) 6.2.0 | |||||
- 攻击路径 本地
- 攻击复杂度 低
- 权限要求 无
- 影响范围 未更改
- 用户交互 需要
- 可用性 高
- 保密性 高
- 完整性 高
| CWE-ID | 漏洞类型 |
| CWE-190 | 整数溢出或超界折返 |
| CWE-191 | 整数下溢（超界折返） |
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