What is CVE-2022-39392?

CVE-2022-39392 is a medium-severity vulnerability in Bytecodealliance Wasmtime, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.9/10. Published 2022-11-10.

How severe is CVE-2022-39392?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Buffer overflow in Bytecodealliance Wasmtime

CVE-2022-39392

Wasmtime is a standalone runtime for WebAssembly. Prior to version 2.0.2, there is a bug in Wasmtime's implementation of its pooling instance allocator when the allocator is configured to give WebAssembly instances a maximum of zero pages…

Vulnerability class: Buffer Overflow

EPSS: 0.002 (42.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N.

Affected products

Bytecodealliance Wasmtime — versions < 2.0.2

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-125 — Out-of-bounds Read
CWE-787 — Out-of-bounds Write

References

github.com/bytecodealliance/wasmtime/security/advisories/GHSA-44mr-8vmm-wjhg
github.com/bytecodealliance/wasmtime/commit/e60c3742904ccbb3e26da201c9221c38a49…

Frequently asked questions

What is CVE-2022-39392?: CVE-2022-39392 is a medium-severity vulnerability in Bytecodealliance Wasmtime, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.9/10. Published 2022-11-10.
How severe is CVE-2022-39392?: Medium severity. CVSS v3 base score is 5.9 out of 10.