Heap-based Buffer Over-read in Binaryen by WebAssembly
CVE-2019-7701

6.5MEDIUM

Key Information:

Vendor

Webassembly

Status
Binaryen
Vendor
CVE Published:
10 February 2019

What is CVE-2019-7701?

A heap-based buffer over-read vulnerability was identified in the Binaryen framework, specifically in the wasm::SExpressionParser::skipWhitespace() function within the wasm-s-parser.cpp file. This issue can be triggered by a specially crafted WebAssembly (wasm) input, resulting in a segmentation fault. The improper handling of input can lead to denial-of-service conditions, as demonstrated through the wasm2js tool. Users of Binaryen 1.38.22 should take precautions to mitigate potential exploitation risks.

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References

https://github.com/WebAssembly/binaryen/issues/1863
x_refsource_MISC

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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