Directories created via os.MkdirAll are not checked for permissions

Dragonfly is an open source P2P-based file distribution and image acceleration system. Prior to 2.1.0, DragonFly2 uses the os.MkdirAll function to create certain directory paths with specific access permissions. This function does not perform any permission checks when a given directory path already exists. This allows a local attacker to create a directory to be used later by DragonFly2 with broad permissions before DragonFly2 does so, potentially allowing the attacker to tamper with the files. This vulnerability is fixed in 2.1.0.

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关键资源的不正确权限授予

Dragonfly 安全漏洞

Dragonfly是DragonflyDB开源的一个框架，可以对任何内容类型进行动态处理。 Dragonfly 2.1.0之前版本存在安全漏洞，该漏洞源于os.MkdirAll函数未对现有目录路径执行权限检查，可能导致本地攻击者篡改文件。

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