cve/2019/CVE-2019-7703.md

### [CVE-2019-7703](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-7703)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

In Binaryen 1.38.22, there is a use-after-free problem in wasm::WasmBinaryBuilder::visitCall in wasm-binary.cpp. Remote attackers could leverage this vulnerability to cause a denial-of-service via a wasm file, as demonstrated by wasm-merge.

### POC

#### Reference
- https://github.com/WebAssembly/binaryen/issues/1865
- https://github.com/WebAssembly/binaryen/issues/1865

#### Github
No PoCs found on GitHub currently.