CVE-2021-46546 Explained : Impact and Mitigation

Cesanta MJS v2.20.0 was found to have a SEGV vulnerability that can result in a Denial of Service (DoS) attack.

Understanding CVE-2021-46546

Cesanta MJS v2.20.0 vulnerability details and impact.

What is CVE-2021-46546?

Cesanta MJS v2.20.0 contains a SEGV vulnerability via mjs_next at src/mjs_object.c, potentially leading to a DoS.

The Impact of CVE-2021-46546

The vulnerability could allow an attacker to cause a DoS by exploiting the SEGV issue in Cesanta MJS v2.20.0.

Technical Details of CVE-2021-46546

Insight into the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability exists in Cesanta MJS v2.20.0 due to an issue with mjs_next at src/mjs_object.c, enabling a DoS attack.

Affected Systems and Versions

Product: Not Applicable
Vendor: Not Applicable
Version: Not Applicable

Exploitation Mechanism

The vulnerability can be exploited by triggering the SEGV flaw via mjs_next to initiate a DoS attack.

Mitigation and Prevention

Steps to address and prevent the CVE-2021-46546 vulnerability.

Immediate Steps to Take

It is recommended to update to a patched version of Cesanta MJS to mitigate the vulnerability.
Monitor for any unusual activity that could indicate an ongoing attack.

Long-Term Security Practices

Regularly check for security updates and patches for Cesanta MJS.
Consider implementing code review processes to catch similar issues in the future.

Patching and Updates

Apply the latest patches and fixes provided by Cesanta to secure the system from CVE-2021-46546.