CVE-2024-38358
CVE-2024-38358 is a low-severity vulnerability with a CVSS 3.x base score of 2.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.
Key facts
- Severity: Low (CVSS 3.x base score 2.9)
- EPSS exploit prediction: 0% (10th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2024-1924
- Weakness: CWE-22
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2024-38358?
- 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.
- How severe is CVE-2024-38358?
- CVE-2024-38358 has a CVSS 3.x base score of 2.9, rated low severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
- Is CVE-2024-38358 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2024-38358?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2024-38358 have an EU (EUVD) identifier?
- Yes. CVE-2024-38358 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-1924.
- When was CVE-2024-38358 published?
- CVE-2024-38358 was published on 2024-06-19 and last updated on 2026-06-17.
References
- https://github.com/wasmerio/wasmer/commit/b9483d022c602b994103f78ecfe46f017f8ac662
- https://github.com/wasmerio/wasmer/security/advisories/GHSA-55f3-3qvg-8pv5
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