CVE-2021-46519 : Exploit Details and Defense Strategies
Learn about CVE-2021-46519, a heap buffer overflow vulnerability in Cesanta MJS v2.20.0. Find out the impact, affected systems, exploitation details, and mitigation steps.
Cesanta MJS v2.20.0 has a heap buffer overflow vulnerability via mjs_array_length at src/mjs_array.c.
Understanding CVE-2021-46519
Cesanta MJS v2.20.0 heap buffer overflow vulnerability details.
What is CVE-2021-46519?
Cesanta MJS v2.20.0 has a heap buffer overflow via mjs_array_length.
The Impact of CVE-2021-46519
The vulnerability can be exploited to execute arbitrary code or cause a denial of service.
Technical Details of CVE-2021-46519
Detailed technical information about the vulnerability.
Vulnerability Description
Cesanta MJS v2.20.0 is susceptible to a heap buffer overflow via mjs_array_length.
Affected Systems and Versions
- Product: N/A
- Vendor: N/A
- Version: 2.20.0
Exploitation Mechanism
The vulnerability can be exploited by manipulating the mjs_array_length function.
Mitigation and Prevention
Mitigation steps to address CVE-2021-46519.
Immediate Steps to Take
- Update Cesanta MJS to a non-vulnerable version.
- Implement input validation to prevent buffer overflows.
Long-Term Security Practices
- Regular code audits to identify and fix vulnerabilities.
- Train developers on secure coding practices.
Patching and Updates
Utilize patches or updates provided by Cesanta to address the vulnerability.