Buffer overflow in Webassembly Binaryen
CVE-2020-18382
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.
Vulnerability class: Buffer Overflow
EPSS: 0.005 (41.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
Affected products
- Webassembly Binaryen — versions 1.38.26
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Exploit, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2020-18382?
- CVE-2020-18382 is a medium-severity vulnerability in Webassembly Binaryen, classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2023-08-22.
- How severe is CVE-2020-18382?
- Medium severity. CVSS v3 base score is 6.5 out of 10.