CVE-2023-31670

wasm2c: DoS via crafted binary

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Published May 23, 2023 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Description

An issue in wasm2c 1.0.32, wasm2wat 1.0.32, wasm-decompile 1.0.32, and wasm-validate 1.0.32 allows attackers to cause a Denial of Service (DoS) via running a crafted binary.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

cpe:2.3:a:webassembly:webassembly_binary_toolkit:1.0.32:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2023-35965	An issue in wasm2c 1.0.32, wasm2wat 1.0.32, wasm-decompile 1.0.32, and wasm-validate 1.0.32 allows attackers to cause a Denial of Service (DoS) via running a crafted binary.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.833% probability within 30 days)

Exploitation poc

Automatable yes

Technical Impact partial

References

Link	Providers
https://github.com/WebAssembly/wabt/issues/2199
https://nvd.nist.gov/vuln/detail/CVE-2023-31670
https://www.cve.org/CVERecord?id=CVE-2023-31670

History

Jan 31, 2025 3:15 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Subscriptions

Webassembly Webassembly Binary Toolkit

Weaknesses

Sources

CVE record Updated: Jan 31, 2025, 2:58 PM

Status: PUBLISHED
Assigner: mitre
Published: May 23, 2023, 12:00 AM
Updated: Jan 31, 2025, 2:58 PM
Reserved: Apr 29, 2023, 12:00 AM

View source JSON

Vulnrichment Updated: Aug 2, 2024, 2:56 PM

Updated: Aug 2, 2024, 2:56 PM

NVD Updated: Jun 17, 2026, 5:57 AM

Status: Modified
Published: May 23, 2023, 1:15 AM
Modified: Jun 17, 2026, 5:57 AM

View source JSON

Red Hat Updated: Apr 14, 2023, 12:00 AM

Severity: Moderate
Public date: Apr 14, 2023, 12:00 AM

View source Bugzilla JSON

OpenCVE enrichment No data

No data.

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