CVE-2021-46542 : Vulnerability Insights and Analysis

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

Understanding CVE-2021-46542

Cesanta MJS v2.20.0 vulnerability details and impact.

What is CVE-2021-46542?

Cesanta MJS v2.20.0 contains a SEGV vulnerability through mjs_print at src/mjs_builtin.c, which can result in a Denial of Service (DoS) attack.

The Impact of CVE-2021-46542

The vulnerability allows attackers to exploit the SEGV issue, potentially causing a DoS by crashing the application.

Technical Details of CVE-2021-46542

Insight into the technical aspects of the vulnerability.

Vulnerability Description

The flaw in Cesanta MJS v2.20.0's mjs_print function in src/mjs_builtin.c leads to a SEGV vulnerability, enabling potential DoS attacks.

Affected Systems and Versions

Affected Systems: Not specified
Affected Version: Cesanta MJS v2.20.0

Exploitation Mechanism

Attackers can leverage the vulnerable mjs_print function to trigger a SEGV issue, disrupting the application's normal operation.

Mitigation and Prevention

Measures to address and prevent the CVE-2021-46542 vulnerability.

Immediate Steps to Take

Update to a patched version of Cesanta MJS beyond v2.20.0.
Monitor vendor communications for security advisories.

Long-Term Security Practices

Conduct regular security assessments and code reviews.
Implement secure coding practices and input validation routines.
Stay informed about CVE announcements and security best practices.

Patching and Updates

Apply patches promptly to address known vulnerabilities and enhance system security.