Vulnerability · Published Aug 22, 2023 · Assigned by mitre
CVE-2020-18382
Medium 6.5
In plain English
A medium-severity security flaw in the binaryen package (Debian). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 50% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.5Medium
Exploit odds (30 days)0.6%top 50.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | binaryen | 68-1 | DEBIAN-CVE-2020-18382 |
| Debian:13 | binaryen | 68-1 | DEBIAN-CVE-2020-18382 |
| Debian:14 | binaryen | 68-1 | DEBIAN-CVE-2020-18382 |
| Ubuntu:22.04:LTS | binaryen | no fix listed | UBUNTU-CVE-2020-18382 |
| Ubuntu:24.04:LTS | binaryen | no fix listed | UBUNTU-CVE-2020-18382 |
| Ubuntu:25.10 | binaryen | no fix listed | UBUNTU-CVE-2020-18382 |
| Ubuntu:26.04:LTS | binaryen | no fix listed | UBUNTU-CVE-2020-18382 |
| Ubuntu:26.10 | binaryen | no fix listed | UBUNTU-CVE-2020-18382 |