CVE-2020-18382 — MEDIUM (6.5)

Vulnerability Description

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.

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Webassembly	Binaryen	1.38.26

Related Weaknesses (CWE)

CWE-787

References

https://github.com/WebAssembly/binaryen/issues/1900ExploitIssue TrackingThird Party Advisory
https://github.com/WebAssembly/binaryen/issues/1900ExploitIssue TrackingThird Party Advisory

FAQ

What is CVE-2020-18382?

CVE-2020-18382 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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-se...

How severe is CVE-2020-18382?

CVE-2020-18382 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-18382?

Check the references section above for vendor advisories and patch information. Affected products include: Webassembly Binaryen.