CVE-2022-39394: wasmtime_trap_code C API function has out of bounds write vulnerability
(updated )
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.
References
- github.com/advisories/GHSA-h84q-m8rr-3v9q
- github.com/bytecodealliance/wasmtime
- github.com/bytecodealliance/wasmtime/commit/087d9d7becf7422b3f872a3bcd5d97bb7ce7ff36
- github.com/bytecodealliance/wasmtime/commit/5b6d5e78de106503b3b9add218bb3d2b1d63c493
- github.com/bytecodealliance/wasmtime/security/advisories/GHSA-h84q-m8rr-3v9q
- groups.google.com/a/bytecodealliance.org/g/sec-announce/c/c1HBDDJwNPA
- nvd.nist.gov/vuln/detail/CVE-2022-39394
- rustsec.org/advisories/RUSTSEC-2022-0097.html
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