CVE-2023-27477
published 2023-03-08CVE-2023-27477: 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…
PriorityP421medium4.3CVSS 3.1
AVNACLPRLUINSUCNILAN
EPSS
0.62%
45.4th percentile
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.
Affected
23 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| bytecodealliance | cranelift-codegen | — | — |
| bytecodealliance | cranelift-codegen | — | — |
| bytecodealliance | cranelift-codegen | >= 0.84.0 < 0.91.1 | 0.91.1 |
| bytecodealliance | cranelift-codegen | >= 0.88.0 < 0.91.1 | 0.91.1 |
| bytecodealliance | cranelift-codegen | >= 0.92.0 < 0.92.1 | 0.92.1 |
| bytecodealliance | cranelift-codegen | >= 0.93.0 < 0.93.1 | 0.93.1 |
| bytecodealliance | wasmtime | — | — |
| bytecodealliance | wasmtime | — | — |
| bytecodealliance | wasmtime | — | — |
| bytecodealliance | wasmtime | — | — |
| bytecodealliance | wasmtime | — | — |
| bytecodealliance | wasmtime | — | — |
| bytecodealliance | wasmtime | — | — |
| bytecodealliance | wasmtime | — | — |
| bytecodealliance | wasmtime | >= 0.0.0-0 < 4.0.1 | 4.0.1 |
| bytecodealliance | wasmtime | >= 0.37.0 < 4.0.1 | 4.0.1 |
| bytecodealliance | wasmtime | >= 1.0.0 < 4.0.1 | 4.0.1 |
| bytecodealliance | wasmtime | >= 5.0.0 < 5.0.1 | 5.0.1 |
| bytecodealliance | wasmtime | >= 6.0.0 < 6.0.1 | 6.0.1 |
| debian | rust-wasmtime | — | — |
| msrc | cbl2_rust_1.68.2-2_on_cbl_mariner_2.0 | — | — |
| msrc | cbl_mariner_2.0_arm | — | — |
| msrc | cbl_mariner_2.0_x64 | — | — |
CVSS provenance
nvdv3.14.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
vendor_msrc4.3MEDIUM
vendor_debian3.1LOW
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
OSV
wasmtime vulnerable to miscompilation of `i8x16.select` with the same inputs on x86_64
osv·2023-03-09
CVE-2023-27477 [LOW] wasmtime vulnerable to miscompilation of `i8x16.select` with the same inputs on x86_64
wasmtime vulnerable to miscompilation of `i8x16.select` with the same inputs on x86_64
### Impact
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.
The impact of this miscompilation is that the WebAssembly instruction can produce incorrect results for the `i8x16.select` instruction. This should have no effect on embedders and does not represent a sandbox escape, for example. Guest programs, howev
GHSA
wasmtime vulnerable to miscompilation of `i8x16.select` with the same inputs on x86_64
ghsa·2023-03-09
CVE-2023-27477 [LOW] CWE-193 wasmtime vulnerable to miscompilation of `i8x16.select` with the same inputs on x86_64
wasmtime vulnerable to miscompilation of `i8x16.select` with the same inputs on x86_64
### Impact
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.
The impact of this miscompilation is that the WebAssembly instruction can produce incorrect results for the `i8x16.select` instruction. This should have no effect on embedders and does not represent a sandbox escape, for example. Guest programs, howev
OSV
Miscompilation of `i8x16.select` with the same inputs on x86\_64
osv·2023-03-03
CVE-2023-27477 Miscompilation of `i8x16.select` with the same inputs on x86\_64
Miscompilation of `i8x16.select` with the same inputs on x86\_64
This is an entry in the RustSec database for the Wasmtime security advisory
located at
https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-xm67-587q-r2vw.
For more information see the GitHub-hosted security advisory.
Microsoft
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
vendor_msrc·2023-03-14·CVSS 4.3
CVE-2023-27477 [LOW] CWE-193 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
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 hos
Debian
CVE-2023-27477: rust-wasmtime - wasmtime is a fast and secure runtime for WebAssembly. Wasmtime's code generatio...
vendor_debian·2023·CVSS 3.1
CVE-2023-27477 [LOW] CVE-2023-27477: rust-wasmtime - wasmtime is a fast and secure runtime for WebAssembly. Wasmtime's code generatio...
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_6
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://docs.rs/wasmtime/latest/wasmtime/struct.Config.html#method.wasm_simdhttps://github.com/bytecodealliance/wasmtime/commit/5dc2bbccbb363e474d2c9a1b8e38a89a43bbd5d1https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-xm67-587q-r2vwhttps://github.com/webassembly/simdhttps://groups.google.com/a/bytecodealliance.org/g/sec-announce/c/Mov-ItrNJsQhttps://docs.rs/wasmtime/latest/wasmtime/struct.Config.html#method.wasm_simdhttps://github.com/bytecodealliance/wasmtime/commit/5dc2bbccbb363e474d2c9a1b8e38a89a43bbd5d1https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-xm67-587q-r2vwhttps://github.com/webassembly/simdhttps://groups.google.com/a/bytecodealliance.org/g/sec-announce/c/Mov-ItrNJsQ
2023-03-08
Published