CVE-2019-7151 Explained : Impact and Mitigation

In Binaryen 1.38.22, a vulnerability was found in wasm::Module::getFunctionOrNull function in wasm/wasm.cpp, which can result in NULL pointer dereference. An attacker could exploit this issue by providing a specialized input to trigger segmentation faults, leading to a denial-of-service condition. This vulnerability has been demonstrated using wasm-opt.

Understanding CVE-2019-7151

This CVE-2019-7151 vulnerability involves a NULL pointer dereference in Binaryen 1.38.22, potentially leading to denial-of-service attacks.

What is CVE-2019-7151?

The vulnerability in wasm::Module::getFunctionOrNull in Binaryen 1.38.22 allows attackers to trigger segmentation faults through crafted input, resulting in denial-of-service.

The Impact of CVE-2019-7151

Attackers can exploit the vulnerability to cause denial-of-service by triggering segmentation faults.

Technical Details of CVE-2019-7151

Binaryen 1.38.22 vulnerability details.

Vulnerability Description

A NULL pointer dereference in wasm::Module::getFunctionOrNull in wasm/wasm.cpp in Binaryen 1.38.22.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Version: Not applicable

Exploitation Mechanism

Attackers can exploit the vulnerability by providing specialized input to trigger segmentation faults.

Mitigation and Prevention

Steps to address CVE-2019-7151.

Immediate Steps to Take

Update Binaryen to a patched version.
Implement input validation to prevent crafted inputs.

Long-Term Security Practices

Regularly update software components to the latest versions.
Conduct security audits to identify and address vulnerabilities.

Patching and Updates

Apply patches and updates provided by Binaryen to fix the vulnerability.