Wasmtime is a runtime for WebAssembly. In versions from 38.0.0 to before 38.0.3, the implementation of component-model related host-to-wasm trampolines in Wasmtime contained a bug where it's possible to carefully craft a component, which when called in a specific way, would crash the host with a segfault or assert failure. Wasmtime 38.0.3 has been released and is patched to fix this issue.
There are no workarounds.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
Low
Partial disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Bytecodealliance Wasmtime
cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:rust:*:*
|
38.0.0
|
38.0.3
|
References 3
https://github.com/bytecodealliance/wasmtime/commit/192f2fcdadfec9d0cf6b58548a8…
security-advisories@github.com
https://github.com/bytecodealliance/wasmtime/pull/11592
security-advisories@github.com
https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-4h67-722j…
security-advisories@github.com