CVE-2022-39394
Description
Wasmtime is a standalone runtime for WebAssembly. Prior to version 2.0.2, there is a bug in Wasmtime's C API implementation where the definition of the wasmtime_trap_code does not match its declared signature in the wasmtime/trap.h header file. This discrepancy causes the function implementation to perform a 4-byte write into a 1-byte buffer provided by the caller. This can lead to three zero bytes being written beyond the 1-byte location provided by the caller. This bug has been patched and users should upgrade to Wasmtime 2.0.2. This bug can be worked around by providing a 4-byte buffer casted to a 1-byte buffer when calling wasmtime_trap_code. Users of the wasmtime crate are not affected by this issue, only users of the C API function wasmtime_trap_code are affected.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
wasmtimecrates.io | >= 2.0.0, < 2.0.2 | 2.0.2 |
wasmtimecrates.io | < 1.0.2 | 1.0.2 |
Affected products
3cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:rust:*:*+ 1 more
- cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:rust:*:*range: <1.0.2
- (no CPE)range: < 2.0.2
Patches
Vulnerability mechanics
References
7- github.com/bytecodealliance/wasmtime/commit/087d9d7becf7422b3f872a3bcd5d97bb7ce7ff36nvdPatchThird Party AdvisoryWEB
- github.com/advisories/GHSA-h84q-m8rr-3v9qghsaADVISORY
- github.com/bytecodealliance/wasmtime/security/advisories/GHSA-h84q-m8rr-3v9qnvdThird Party AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2022-39394ghsaADVISORY
- github.com/bytecodealliance/wasmtime/commit/5b6d5e78de106503b3b9add218bb3d2b1d63c493ghsaWEB
- groups.google.com/a/bytecodealliance.org/g/sec-announce/c/c1HBDDJwNPAghsaWEB
- rustsec.org/advisories/RUSTSEC-2022-0097.htmlghsaWEB
News mentions
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