CVE-2024-38358

Published: Jun 19, 2024Modified: Jun 17, 2026Deferred

2.9

Vector

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploitability: 1.4 / Impact: 1.4

Source: security-advisories@github.com (Secondary)

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.

Related CWEs

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

References (4)

https://github.com/wasmerio/wasmer/commit/b9483d022c602b994103f78ecfe46f017f8ac662

Source: security-advisories@github.com

https://github.com/wasmerio/wasmer/security/advisories/GHSA-55f3-3qvg-8pv5

Source: security-advisories@github.com

https://github.com/wasmerio/wasmer/commit/b9483d022c602b994103f78ecfe46f017f8ac662

Source: af854a3a-2127-422b-91ae-364da2661108

https://github.com/wasmerio/wasmer/security/advisories/GHSA-55f3-3qvg-8pv5

Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.