CVE-2019-7704 : Exploit Details and Defense Strategies
Learn about CVE-2019-7704, a vulnerability in Binaryen 1.38.22's wasm::WasmBinaryBuilder::readUserSection function causing excessive memory allocation. Find out how to mitigate this issue.
Binaryen 1.38.22's wasm::WasmBinaryBuilder::readUserSection function leads to excessive memory allocation when executing wasm-merge and wasm-opt.
Understanding CVE-2019-7704
What is CVE-2019-7704?
The vulnerability in Binaryen 1.38.22 allows for excessive memory allocation due to the function wasm::WasmBinaryBuilder::readUserSection.
The Impact of CVE-2019-7704
The vulnerability can be exploited by executing wasm-merge and wasm-opt, causing a situation where an excessive amount of memory is allocated.
Technical Details of CVE-2019-7704
Vulnerability Description
The function wasm::WasmBinaryBuilder::readUserSection in Binaryen 1.38.22 triggers an attempt at excessive memory allocation.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Version: 1.38.22
Exploitation Mechanism
The vulnerability can be exploited by executing wasm-merge and wasm-opt.
Mitigation and Prevention
Immediate Steps to Take
- Update to a patched version of Binaryen.
- Avoid executing wasm-merge and wasm-opt until the issue is resolved.
Long-Term Security Practices
- Regularly update software to the latest versions.
- Monitor security advisories for Binaryen.
Patching and Updates
Apply patches provided by Binaryen to address the vulnerability.