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CVE-2019-7703

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

Github

No PoCs found on GitHub currently.