CVE-2021-46512 : Vulnerability Insights and Analysis

Cesanta MJS v2.20.0 has a SEGV vulnerability in mjs_apply at src/mjs_exec.c, potentially leading to a Denial of Service (DoS).

Understanding CVE-2021-46512

Cesanta MJS v2.20.0 SEGV vulnerability and its impacts, technical details, and mitigation steps.

What is CVE-2021-46512?

Cesanta MJS v2.20.0 contains a SEGV vulnerability through mjs_apply at src/mjs_exec.c, posing a risk of DoS.

The Impact of CVE-2021-46512

The vulnerability can be exploited to cause a Denial of Service, disrupting the normal functionality of the application.

Technical Details of CVE-2021-46512

Details on the vulnerability, affected systems, and exploitation methods.

Vulnerability Description

The vulnerability exists in Cesanta MJS v2.20.0 via mjs_apply at src/mjs_exec.c, allowing for a SEGV issue.

Affected Systems and Versions

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

Exploitation Mechanism

The vulnerability can be exploited by an attacker to trigger a SEGV condition, leading to a DoS attack.

Mitigation and Prevention

Measures to address and prevent the CVE-2021-46512 vulnerability.

Immediate Steps to Take

Monitor for security advisories from the vendor.
Implement network controls to restrict access.
Consider using alternative software if a patch is unavailable.

Long-Term Security Practices

Regularly update software and apply patches.
Conduct security assessments and audits periodically.
Employ intrusion detection systems for early threat detection.

Patching and Updates

Apply any patches or updates released by Cesanta to address the vulnerability.