CVE-2021-46515 : What You Need to Know

This CVE article discusses a vulnerability in Cesanta MJS v2.20.0 that leads to an assertion failure in the code.

Understanding CVE-2021-46515

This CVE identifies an assertion failure in Cesanta MJS v2.20.0.

What is CVE-2021-46515?

The vulnerability involves an assertion `mjs_stack_size(&mjs->scopes) >= scopes_len' failing at src/mjs_exec.c in Cesanta MJS v2.20.0.

The Impact of CVE-2021-46515

This vulnerability can potentially be exploited by attackers to cause denial of service or execute arbitrary code.

Technical Details of CVE-2021-46515

This section delves into the technical aspects of the CVE.

Vulnerability Description

An assertion fails at src/mjs_exec.c due to `mjs_stack_size(&mjs->scopes) >= scopes_len'.

Affected Systems and Versions

Affected Version: Cesanta MJS v2.20.0

Exploitation Mechanism

Attackers can exploit this vulnerability to trigger a denial of service or execute arbitrary code.

Mitigation and Prevention

Explore the steps for mitigating and preventing the CVE.

Immediate Steps to Take

Upgrade to a patched version of Cesanta MJS.
Monitor for any unauthorized access or abnormal activities.

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities.
Implement strong access controls to limit exposure to potential attacks.

Patching and Updates

Apply vendor-provided patches promptly to protect against known vulnerabilities.