CVE-2020-18378

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Published Aug 22, 2023 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Description

A NULL pointer dereference was discovered in SExpressionWasmBuilder::makeBlock in wasm/wasm-s-parser.c in Binaryen 1.38.26. A crafted wasm input can cause a segmentation fault, leading to denial-of-service, as demonstrated by wasm-as.

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:binaryen:1.38.26:*:*:*:*:*:*:*

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-2020-10302	A NULL pointer dereference was discovered in SExpressionWasmBuilder::makeBlock in wasm/wasm-s-parser.c in Binaryen 1.38.26. A crafted wasm input can cause a segmentation fault, leading to denial-of-service, as demonstrated by wasm-as.

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 Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.610% probability within 30 days)

Exploitation poc

Automatable no

Technical Impact partial

References

Link	Providers
https://github.com/WebAssembly/binaryen/issues/1900

History

Oct 3, 2024 9:30 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Subscriptions

Webassembly Binaryen

Weaknesses

CWE-476

Sources

CVE record Updated: Oct 3, 2024, 8:30 PM

Status: PUBLISHED
Assigner: mitre
Published: Aug 22, 2023, 12:00 AM
Updated: Oct 3, 2024, 8:30 PM
Reserved: Aug 13, 2020, 12:00 AM

View source JSON

Vulnrichment Updated: Aug 4, 2024, 2:00 PM

Updated: Aug 4, 2024, 2:00 PM

NVD Updated: Jun 17, 2026, 2:59 AM

Status: Modified
Published: Aug 22, 2023, 7:15 PM
Modified: Jun 17, 2026, 2:59 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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