CVE-2021-45947 : Vulnerability Insights and Analysis

Wasm3 0.5.0 has an out-of-bounds write vulnerability in Runtime_Release, which is called from EvaluateExpression and InitDataSegments.

Understanding CVE-2021-45947

This CVE involves an out-of-bounds write vulnerability in Wasm3 0.5.0.

What is CVE-2021-45947?

The vulnerability in Wasm3 0.5.0 allows for an out-of-bounds write in Runtime_Release, triggered by EvaluateExpression and InitDataSegments.

The Impact of CVE-2021-45947

The vulnerability could be exploited to perform unauthorized actions or crash the application, potentially leading to denial of service incidents.

Technical Details of CVE-2021-45947

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

Wasm3 0.5.0 is affected by an out-of-bounds write vulnerability in the function Runtime_Release, which is invoked from EvaluateExpression and InitDataSegments.

Affected Systems and Versions

Affected Version: 0.5.0
Systems: All systems running Wasm3 0.5.0

Exploitation Mechanism

The vulnerability is exploited through an out-of-bounds write that can be triggered when utilizing EvaluateExpression and InitDataSegments in Wasm3.

Mitigation and Prevention

Protecting systems from the CVE requires immediate actions and long-term security measures.

Immediate Steps to Take

Update Wasm3 to a patched version or apply relevant security fixes.
Monitor system logs for any suspicious activities related to this vulnerability.

Long-Term Security Practices

Conduct regular security audits and code reviews for Wasm3 implementations.
Educate developers on secure coding practices to prevent similar vulnerabilities.

Patching and Updates

Stay informed about security updates provided by the Wasm3 project.
Prioritize the timely application of patches to mitigate the risk of exploitation.