CVE-2021-46540 : What You Need to Know
Learn about CVE-2021-46540 impacting Cesanta MJS v2.20.0, leading to a Denial of Service (DoS) attack. Find out how to mitigate the vulnerability and prevent exploitation.
Cesanta MJS v2.20.0 contains a SEGV vulnerability in mjs_get_mjs at src/mjs_builtin.c, leading to a Denial of Service (DoS).
Understanding CVE-2021-46540
What is CVE-2021-46540?
Cesanta MJS v2.20.0 has a vulnerability that can be exploited to cause a DoS.
The Impact of CVE-2021-46540
This vulnerability has the potential to disrupt the service and availability of systems using Cesanta MJS v2.20.0.
Technical Details of CVE-2021-46540
Vulnerability Description
The vulnerability exists in mjs_get_mjs at src/mjs_builtin.c in Cesanta MJS v2.20.0, allowing for a DoS attack.
Affected Systems and Versions
- Affected Version: v2.20.0
Exploitation Mechanism
The vulnerability can be exploited by attackers to trigger a DoS condition in systems running Cesanta MJS v2.20.0.
Mitigation and Prevention
Immediate Steps to Take
- Update Cesanta MJS to a patched version to mitigate the vulnerability.
- Monitor for any unusual activity that could indicate a DoS attack.
Long-Term Security Practices
- Regularly apply security patches and updates to prevent known vulnerabilities.
Patching and Updates
Ensure timely application of security patches and updates to prevent potential exploitation of vulnerabilities.