Out-of-bounds Read in Bytecodealliance Wasmtime
CVE-2023-26489
wasmtime is a fast and secure runtime for WebAssembly. In affected versions wasmtime's code generator, Cranelift, has a bug on x86_64 targets where address-mode computation mistakenly would calculate a 35-bit effective address instead of W…
Vulnerability class: Buffer Overflow
EPSS: 0.026 (86.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Bytecodealliance Wasmtime — versions cranelift-codegen: >= 0.84.0, < 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
- https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-ff4p-7xrq-q5r8 (x_refsource_CONFIRM)
- https://github.com/bytecodealliance/wasmtime/commit/63fb30e4b4415455d47b3da5a19d79c12f4f2d1f (x_refsource_MISC)
- https://docs.rs/wasmtime/latest/wasmtime/struct.Config.html#method.static_memory_guard_size (x_refsource_MISC)
- https://docs.rs/wasmtime/latest/wasmtime/struct.Config.html#method.static_memory_maximum_size (x_refsource_MISC)
- https://groups.google.com/a/bytecodealliance.org/g/sec-announce/c/Mov-ItrNJsQ (x_refsource_MISC)
Frequently asked questions
- What is CVE-2023-26489?
- CVE-2023-26489 is a critical-severity vulnerability in Bytecodealliance Wasmtime, classified under Out-of-bounds Read. CVSS score: 10.0/10. Published 2023-03-08.
- How severe is CVE-2023-26489?
- Critical severity. CVSS v3 base score is 10.0 out of 10.
- Is CVE-2023-26489 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.