CVE-2023-27477

Katalog CVE

CVSS 4.3 · Medium EPSS 0,62%

Kerentanan Off-by-one Error pada bytecodealliance cranelift-codegen, bytecodealliance wasmtime. Skor CVSS 3.1 4.3 (Medium) menurut NVD.

Deskripsi (NVD)

wasmtime is a fast and secure runtime for WebAssembly. Wasmtime's code generation backend, Cranelift, has a bug on x86_64 platforms for the WebAssembly `i8x16.select` instruction which will produce the wrong results when the same operand is provided to the instruction and some of the selected indices are greater than 16. There is an off-by-one error in the calculation of the mask to the `pshufb` instruction which causes incorrect results to be returned if lanes are selected from the second vector. This codegen bug has been fixed in Wasmtiem 6.0.1, 5.0.1, and 4.0.1. Users are recommended to upgrade to these updated versions. If upgrading is not an option for you at this time, you can avoid this miscompilation by disabling the Wasm simd proposal. Additionally the bug is only present on x86_64 hosts. Other platforms such as AArch64 and s390x are not affected.

Rincian

Terbit di NVD

8 Maret 2023

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

4.3 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-193: Off-by-one Error

EPSS (30 hari)

0,62% peluang dieksploitasi; lebih tinggi dari 48,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-xm67-587q-r2vw mitigasi · patch · advisory vendor
• https://groups.google.com/a/bytecodealliance.org/g/sec-announce/c/Mov-ItrNJsQ mailing list · release notes · advisory vendor
• https://github.com/bytecodealliance/wasmtime/commit/5dc2bbccbb363e474d2c9a1b8e38a89a43bbd5d1 patch
• https://docs.rs/wasmtime/latest/wasmtime/struct.Config.html#method.wasm_simd product
• https://github.com/webassembly/simd not applicable