Input validation error in Wasmtime - CVE-2023-27477
Published: March 20, 2023
Vulnerability identifier: #VU73808
CSH Severity: Low
CVSS v4: 2.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-27477
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to miscompilation of "i8x16.select" with the same inputs on x86_64. A remote user can cause the WebAssembly instruction to produce incorrect results for the i8x16.select instruction.
Affected software
Wasmtime
envoy
envoy
How to mitigate CVE-2023-27477
Install updates from vendor's website.
Wasmtime - addressed in versions 4.0.1, 5.0.1, 6.0.1
envoy - update to 1.25.3
envoy - update to 1.25.3
External References
- https://docs.rs/wasmtime/latest/wasmtime/struct.Config.html#method.wasm_simd
- https://groups.google.com/a/bytecodealliance.org/g/sec-announce/c/Mov-ItrNJsQ
- https://github.com/webassembly/simd
- https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-xm67-587q-r2vw
- https://github.com/bytecodealliance/wasmtime/commit/5dc2bbccbb363e474d2c9a1b8e38a89a43bbd5d1