CVE-2024-38358
Programs can also crash the runtime by creating a symlink pointing outside with `path_symlink` and `path_open`ing the link.
Does this matter?
Lower severity and a low EPSS score (0.20%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 2.9 LOWCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 0.20% probability · 10th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-22
- Source
- security-advisories@github.com
References
- https://github.com/wasmerio/wasmer/commit/b9483d022c602b994103f78ecfe46f017f8ac662
- https://github.com/wasmerio/wasmer/security/advisories/GHSA-55f3-3qvg-8pv5
- https://github.com/wasmerio/wasmer/commit/b9483d022c602b994103f78ecfe46f017f8ac662
- https://github.com/wasmerio/wasmer/security/advisories/GHSA-55f3-3qvg-8pv5
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.