Type Confusion Affecting wasmtime package, versions <0.30.0
Threat Intelligence
EPSS
0.05% (16th
percentile)
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Test your applications- Snyk ID SNYK-RUST-WASMTIME-1592671
- published 19 Sep 2021
- disclosed 19 Sep 2021
- credit alexcrichton
Introduced: 19 Sep 2021
CVE-2021-39219 Open this link in a new tabHow to fix?
Upgrade wasmtime to version 0.30.0 or higher.
Overview
Affected versions of this package are vulnerable to Type Confusion in the safe Linker::func_* API. When one Engine is used to create the Linker and then a different Engine is used to create a Store, then the Linker is used to instantiate a module into that Store. Cross-Engine usage of functions is not supported in Wasmtime and this can result in type confusion of function pointers.
References
CVSS Scores
version 3.1