WebAssembly Binaryen 1.38.26 Wasm wasm/wasm-s-parser.c makeBlock null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in WebAssembly Binaryen 1.38.26. This impacts the function SExpressionWasmBuilder::makeBlock of the file wasm/wasm-s-parser.c of the component Wasm Handler. Such manipulation leads to null pointer dereference. This vulnerability is documented as CVE-2020-18378. There is not any exploit available.

Detailsinfo

A vulnerability was found in WebAssembly Binaryen 1.38.26 and classified as problematic. Affected by this issue is the function SExpressionWasmBuilder::makeBlock of the file wasm/wasm-s-parser.c of the component Wasm Handler. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. CVE summarizes:

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.

The weakness was released 08/23/2023 as 1900. The advisory is available at github.com. This vulnerability is handled as CVE-2020-18378 since 08/13/2020. Technical details are known, but there is no available exploit.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.5

VulDB Base Score: 3.5
VulDB Temp Score: 3.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CNA Base Score: 6.5
CNA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/13/2020 🔍
08/23/2023 +1105 days 🔍
08/23/2023 +0 days 🔍
10/04/2024 +407 days 🔍

Sourcesinfo

Product: github.com

Advisory: 1900
Status: Confirmed

CVE: CVE-2020-18378 (🔍)
GCVE (CVE): GCVE-0-2020-18378
GCVE (VulDB): GCVE-100-237686

Entryinfo

Created: 08/23/2023 07:28
Updated: 10/04/2024 00:30
Changes: 08/23/2023 07:28 (41), 09/14/2023 13:42 (11), 10/04/2024 00:30 (26)
Complete: 🔍
Cache ID: 216::103

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