Wasmtime doesn't fully sandbox all the Windows device filenames

Wasmtime is a fast and secure runtime for WebAssembly. Wasmtime's filesystem sandbox implementation on Windows blocks access to special device filenames such as "COM1", "COM2", "LPT0", "LPT1", and so on, however it did not block access to the special device filenames which use superscript digits, such as "COM¹", "COM²", "LPT⁰", "LPT¹", and so on. Untrusted Wasm programs that are given access to any filesystem directory could bypass the sandbox and access devices through those special device filenames with superscript digits, and through them gain access peripheral devices connected to the computer, or network resources mapped to those devices. This can include modems, printers, network printers, and any other device connected to a serial or parallel port, including emulated USB serial ports. Patch releases for Wasmtime have been issued as 24.0.2, 25.0.3, and 26.0.1. Users of Wasmtime 23.0.x and prior are recommended to upgrade to one of these patched versions. There are no known workarounds for this issue. Affected Windows users are recommended to upgrade.

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Windows设备名处理不恰当

Wasmtime 安全漏洞

Wasmtime是Bytecode Alliance开源的一个独立的仅用于 WebAssembly 和 WASI 的 wasm 优化运行时。 Wasmtime存在安全漏洞，该漏洞源于在Windows上的文件系统沙箱实现未阻止对使用上标数字的特殊设备文件名的访问。以下版本受到影响：24.0.1及之前版本、25.0.0版本、25.0.1版本、25.0.2版本和26.0.0版本。

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