CVE-2021-46330 : What You Need to Know

Moddable SDK v11.5.0 was discovered to contain a SEGV vulnerability via xs/sources/xsDataView.c in fx_ArrayBuffer_prototype_concat.

Understanding CVE-2021-46330

This CVE involves a vulnerability in Moddable SDK v11.5.0 that can lead to a SEGV exploit in the fx_ArrayBuffer_prototype_concat function.

What is CVE-2021-46330?

The CVE-2021-46330 vulnerability originates in Moddable SDK v11.5.0 due to a flaw in the xsDataView.c file within the fx_ArrayBuffer_prototype_concat function.

The Impact of CVE-2021-46330

The vulnerability in Moddable SDK v11.5.0 could allow attackers to exploit the SEGV issue, potentially leading to denial of service or arbitrary code execution.

Technical Details of CVE-2021-46330

This section covers technical aspects of the CVE.

Vulnerability Description

The vulnerability in Moddable SDK v11.5.0 is caused by inadequate input validation in the xsDataView.c file, enabling a SEGV attack through fx_ArrayBuffer_prototype_concat.

Affected Systems and Versions

Moddable SDK v11.5.0

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting specially designed input to trigger the SEGV issue in the fx_ArrayBuffer_prototype_concat function.

Mitigation and Prevention

Protective measures to address CVE-2021-46330.

Immediate Steps to Take

Update Moddable SDK to a patched version that addresses the SEGV vulnerability.
Monitor security advisories for any related patches or updates.

Long-Term Security Practices

Implement secure coding practices to prevent similar vulnerabilities in the future.

Patching and Updates

Apply security patches promptly to mitigate the vulnerability in Moddable SDK v11.5.0.