cve-2023-27477
Vulnerability from cvelistv5
Published
2023-03-08 00:00
Modified
2025-02-25 14:59
Severity ?
3.1 (Low) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
Summary
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.
References
security-advisories@github.comhttps://docs.rs/wasmtime/latest/wasmtime/struct.Config.html#method.wasm_simdProduct
security-advisories@github.comhttps://github.com/bytecodealliance/wasmtime/commit/5dc2bbccbb363e474d2c9a1b8e38a89a43bbd5d1Patch
security-advisories@github.comhttps://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-xm67-587q-r2vwMitigation, Patch, Vendor Advisory
security-advisories@github.comhttps://github.com/webassembly/simdNot Applicable
security-advisories@github.comhttps://groups.google.com/a/bytecodealliance.org/g/sec-announce/c/Mov-ItrNJsQMailing List, Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://docs.rs/wasmtime/latest/wasmtime/struct.Config.html#method.wasm_simdProduct
af854a3a-2127-422b-91ae-364da2661108https://github.com/bytecodealliance/wasmtime/commit/5dc2bbccbb363e474d2c9a1b8e38a89a43bbd5d1Patch
af854a3a-2127-422b-91ae-364da2661108https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-xm67-587q-r2vwMitigation, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/webassembly/simdNot Applicable
af854a3a-2127-422b-91ae-364da2661108https://groups.google.com/a/bytecodealliance.org/g/sec-announce/c/Mov-ItrNJsQMailing List, Release Notes, Vendor Advisory
Impacted products
Vendor Product Version
bytecodealliance wasmtime Version: cranelift-codegen: >= 0.88.0, < 0.91.1
Version: cranelift-codegen: >= 0.92.0, < 0.92.1
Version: cranelift-codegen: >= 0.93.0, < 0.93.1
Version: wasmtime: >= 0.37.0, < 4.0.1
Version: wasmtime: >= 5.0.0, < 5.0.1
Version: wasmtime: >= 6.0.0, < 6.0.1
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