Vulnerability in Bytecodealliance Wasmtime
CVE-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 `i8x16.select` instruction which will produce the wrong results when the same operand i…
EPSS: 0.005 (65.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N.
Affected products
- Bytecodealliance Wasmtime — versions cranelift-codegen: >= 0.88.0, < 0.91.1, cranelift-codegen: >= 0.92.0, < 0.92.1, cranelift-codegen: >= 0.93.0, < 0.93.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- docs.rs/wasmtime/latest/wasmtime/struct.Config.html
- github.com/webassembly/simd
- groups.google.com/a/bytecodealliance.org/g/sec-announce/c/Mov-ItrNJsQ
- github.com/bytecodealliance/wasmtime/security/advisories/GHSA-xm67-587q-r2vw
- github.com/bytecodealliance/wasmtime/commit/5dc2bbccbb363e474d2c9a1b8e38a89a43b…
Frequently asked questions
- What is CVE-2023-27477?
- CVE-2023-27477 is a low-severity vulnerability in Bytecodealliance Wasmtime, classified under Off-by-one Error. CVSS score: 3.1/10. Published 2023-03-08.
- How severe is CVE-2023-27477?
- Low severity. CVSS v3 base score is 3.1 out of 10.
- Is CVE-2023-27477 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.