WebAssembly Binaryen 1.38.26 Wasm wasm-binary.cpp Block* heap-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in WebAssembly Binaryen 1.38.26. Affected is the function wasm::WasmBinaryBuilder::visitBlock(wasm::Block* of the file /src/wasm/wasm-binary.cpp of the component Wasm Handler. The manipulation results in heap-based overflow. This vulnerability is known as CVE-2020-18382. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, was found in WebAssembly Binaryen 1.38.26. Affected is the function wasm::WasmBinaryBuilder::visitBlock(wasm::Block* of the file /src/wasm/wasm-binary.cpp of the component Wasm Handler. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Heap-buffer-overflow in /src/wasm/wasm-binary.cpp in wasm::WasmBinaryBuilder::visitBlock(wasm::Block*) in Binaryen 1.38.26. A crafted wasm input can cause a segmentation fault, leading to denial-of-service, as demonstrated by wasm-opt.

The weakness was published 08/23/2023 as 1900. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2020-18382 since 08/13/2020. There are known technical details, but no exploit is available.

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: 6.0
VulDB Meta Temp Score: 6.0

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
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 🔍
09/14/2023 +22 days 🔍

Sourcesinfo

Product: github.com

Advisory: 1900
Status: Confirmed

CVE: CVE-2020-18382 (🔍)
GCVE (CVE): GCVE-0-2020-18382
GCVE (VulDB): GCVE-100-237720

Entryinfo

Created: 08/23/2023 07:59
Updated: 09/14/2023 15:10
Changes: 08/23/2023 07:59 (41), 09/14/2023 15:10 (11)
Complete: 🔍
Cache ID: 216::103

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