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Advisories

Wasmtime before 24.0.12, 25.0.0 before 36.0.13, 37.0.0 before 46.0.2, and 47.0.0 before 47.0.3 Cross-Engine Type Confusion

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Severity
low
Date
Affecting

  • wasmtime >= 0, < 24.0.12

  • wasmtime >= 25.0.0, < 36.0.13

  • wasmtime >= 37.0.0, < 46.0.2

  • wasmtime >= 47.0.0, < 47.0.3

CWE
  • CWE-787 Out-of-bounds Write
CVSS
1.0
CVSS V4 Vector
CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
Description
Wasmtime before 24.0.12, 25.0.0 before 36.0.13, 37.0.0 before 46.0.2, and 47.0.0 before 47.0.3 contains a type confusion vulnerability because several Store APIs fail to validate that objects belong to the Store's Engine. Embedders mixing objects between Engines via Instance::new, StructRefPre::new, or Tag::new can trigger trampoline signature mismatches causing out-of-bounds stack writes, GC heap corruption, or panics.

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