CVE-2021-39216

Description

* [Use after free passing `externref`s to Wasm in Wasmtime](https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-v4cp-h94r-m7xf) * [Out-of-bounds read/write and invalid free with `externref`s and GC safepoints in Wasmtime](https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-4873-36h9-wv49) * [Wrong type for `Linker`-define functions when used across two `Engine`s](https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-q879-9g95-56mx)

How to fix CVE-2021-39216

To remediate CVE-2021-39216, upgrade the affected package to a fixed version below.

• —upgrade to 0.30.0 or later
• —upgrade to 0.30.0 or later
• —upgrade to 0.30.0 or later
• —upgrade to 0.30.0 or later
• —upgrade to 398a73f0dd862dbe703212ebae8e34036a18c11c or later
• —upgrade to 0.30.0 or later
• —upgrade to b39f087414f27ae40c44449ed5d1154e03449bff or later
• —upgrade to 0.30.0 or later
• —upgrade to 0.30.0 or later
• —upgrade to 101998733b74624cbd348a2366d05760b40181f3 or later

Is CVE-2021-39216 being exploited?

Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.

Affected packages (10)

• >= 0.26.0, < 0.30.0
• from 0, < 0.30.0
• from 0, < 0.30.0
• >= 0.0.0-0, < 0.30.0
• from 0, < 398a73f0dd862dbe703212ebae8e34036a18c11c | from 0, < 0.30.0
• >= 0.26.0, < 0.30.0
• from 0, < b39f087414f27ae40c44449ed5d1154e03449bff | from 0, < 0.30.0
• from 0, < 0.30.0
• from 0, < 0.30.0
• from 0, < 101998733b74624cbd348a2366d05760b40181f3 | from 0, < 0.30.0

CVSS scores

References (18)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2021-39216
• ADVISORYnvd.nist.gov/vuln/detail/CVE-2021-39218
• ADVISORYnvd.nist.gov/vuln/detail/CVE-2021-39219
• PATCHgithub.com/bytecodealliance/wasmtime
• WEBcrates.io