CVE-2019-7701

Medium

Description

A heap-based buffer over-read was discovered in wasm::SExpressionParser::skipWhitespace() in wasm-s-parser.cpp in Binaryen 1.38.22. A crafted wasm input can cause a segmentation fault, leading to denial-of-service, as demonstrated by wasm2js.

SeverityMedium
CVSS6.5
Exploit probability—
ProductWebassembly Binaryen
PublishedFeb 10, 2019
First seenFeb 10, 2019

How to fix

Update
  • webassembly binaryen64 or later

Affected products

ProductAffected versionsFixed in
webassembly binaryenv < 6464

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