Security Advisory

CVE-2024-38358

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2024-06-19 19:55:26

Last updated 2024-08-02 04:04:25

Assigner GitHub_M

State PUBLISHED

Description

Wasmer is a web assembly (wasm) Runtime supporting WASIX, WASI and Emscripten. If the preopened directory has a symlink pointing outside, WASI programs can traverse the symlink and access host filesystem if the caller sets both `oflags::creat` and `rights::fd_write`. Programs can also crash the runtime by creating a symlink pointing outside with `path_symlink` and `path_open`ing the link. This issue has been addressed in commit `b9483d022` which has been included in release version 4.3.2. Users are advised to upgrade. There are no known workarounds for this vulnerability.

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