GHSA-xm67-587q-r2vw · 深刻度: low · エコシステム: rust — wasmtime vulnerable to miscompilation of `i8x16.select` with the same inputs on x86_64
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.
総合評価: CVE-2023-27477 は低リスク(28.5/100)。CVSS 深刻度は低。悪用される可能性が高い(EPSS 0.62%、45 パーセンタイル) 推奨対応: 悪用情報と EPSS の推移を監視し、必要に応じて優先度を見直してください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置(高いほど相対的に深刻)を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ(新 − 旧) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.30% | 0.62% | +0.33% |
| 2 | 2026-06-10 | 0.47% | 0.30% | -0.18% |
| 3 | 2026-03-26 | — | 0.47% | — |
EPSS の全履歴 (全 14 件)
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 3.1 | 3.1 | LOW |
|
1.6 | 1.4 | [email protected] |
| 4.3 | 3.1 | MEDIUM |
|
2.8 | 1.4 | [email protected] |
GHSA-xm67-587q-r2vw · 深刻度: low · エコシステム: rust — wasmtime vulnerable to miscompilation of `i8x16.select` with the same inputs on x86_64
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2023-27477 unimportant priority: Debian including 1 source packages (rust-wasmtime), 3 status rows across 3 suites (forky, sid, trixie): resolved 3. | https://security-tracker.debian.org/tracker/CVE-2023-27477 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| bytecodealliance | cranelift-codegen | >= 0.84.0, < 0.91.1 | cpe:2.3:a:bytecodealliance:cranelift-codegen:*:*:*:*:*:rust:*:* |
| bytecodealliance | cranelift-codegen | 0.92.0 | cpe:2.3:a:bytecodealliance:cranelift-codegen:0.92.0:*:*:*:*:rust:*:* |
| bytecodealliance | cranelift-codegen | 0.93.0 | cpe:2.3:a:bytecodealliance:cranelift-codegen:0.93.0:*:*:*:*:rust:*:* |
| bytecodealliance | wasmtime | >= 0.37.0, < 4.0.1 | cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:rust:*:* |
| bytecodealliance | wasmtime | 5.0.0 | cpe:2.3:a:bytecodealliance:wasmtime:5.0.0:*:*:*:*:rust:*:* |
| bytecodealliance | wasmtime | 6.0.0 | cpe:2.3:a:bytecodealliance:wasmtime:6.0.0:*:*:*:*:rust:*:* |
| URL | タグ |
|---|---|
| https://docs.rs/wasmtime/latest/wasmtime/struct.Config.html#method.wasm_simd | Product |
| https://github.com/bytecodealliance/wasmtime/commit/5dc2bbccbb363e474d2c9a1b8e38a89a43bbd5d1 | Patch |
| https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-xm67-587q-r2vw | Mitigation Patch Vendor Advisory |
| https://github.com/webassembly/simd | Not Applicable |
| https://groups.google.com/a/bytecodealliance.org/g/sec-announce/c/Mov-ItrNJsQ | Mailing List Release Notes Vendor Advisory |