CVE-2022-31169

2022-07-2204:15:14

CWE-682

[email protected]

web.nvd.nist.gov

wasmtime

cranelift

bug

aarch64

division

webassembly

sandbox

security

nvd

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

0.001 Low

EPSS

Percentile

29.2%

JSON

Wasmtime is a standalone runtime for WebAssembly. There is a bug in Wasmtime’s code generator, Cranelift, for AArch64 targets where constant divisors can result in incorrect division results at runtime. This affects Wasmtime prior to version 0.38.2 and Cranelift prior to 0.85.2. This issue only affects the AArch64 platform. Other platforms are not affected. The translation rules for constants did not take into account whether sign or zero-extension should happen which resulted in an incorrect value being placed into a register when a division was encountered. The impact of this bug is that programs executing within the WebAssembly sandbox would not behave according to the WebAssembly specification. This means that it is hypothetically possible for execution within the sandbox to go awry and WebAssembly programs could produce unexpected results. This should not impact hosts executing WebAssembly but does affect the correctness of guest programs. This bug has been patched in Wasmtime version 0.38.2 and cranelift-codegen 0.85.2. There are no known workarounds.

Affected configurations

Vulners

NVD

Node

bytecodealliancewasmtimeRange<0.38.2

bytecodealliancewasmtimeRange<0.85.2

VendorProductVersionCPE
bytecodealliancewasmtime*cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:*:*:*
bytecodealliancewasmtime*cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
bytecodealliance	wasmtime	*	cpe:2.3:a:bytecodealliance:wasmtime::::::::
bytecodealliance	wasmtime	*	cpe:2.3:a:bytecodealliance:wasmtime::::::::

CNA Affected

[
  {
    "product": "wasmtime",
    "vendor": "bytecodealliance",
    "versions": [
      {
        "status": "affected",
        "version": "< 0.38.2"
      },
      {
        "status": "affected",
        "version": "< 0.85.2"
      }
    ]
  }
]