CVE-2021-46522 : Vulnerability Insights and Analysis

Cesanta MJS v2.20.0 has a heap buffer overflow vulnerability that can be exploited via /usr/lib/x86_64-linux-gnu/libasan.so.4+0xaff53.

Understanding CVE-2021-46522

Cesanta MJS v2.20.0 heap buffer overflow vulnerability

What is CVE-2021-46522?

Cesanta MJS v2.20.0 is affected by a heap buffer overflow vulnerability that allows attackers to trigger the issue through /usr/lib/x86_64-linux-gnu/libasan.so.4+0xaff53.

The Impact of CVE-2021-46522

Attackers can exploit this vulnerability to execute arbitrary code or cause a denial of service (DoS) condition.

Technical Details of CVE-2021-46522

Details of the vulnerability in Cesanta MJS v2.20.0

Vulnerability Description

Cesanta MJS v2.20.0 contains a heap buffer overflow vulnerability via /usr/lib/x86_64-linux-gnu/libasan.so.4+0xaff53.

Affected Systems and Versions

Product: N/A
Version: N/A

Exploitation Mechanism

The vulnerability can be exploited by attackers to trigger the heap buffer overflow via a specific memory address.

Mitigation and Prevention

Protecting against CVE-2021-46522

Immediate Steps to Take

Disable unnecessary services
Implement proper input validation
Monitor and analyze system logs for any suspicious activity

Long-Term Security Practices

Keep software and systems updated with the latest security patches
Conduct regular security audits and penetration testing

Patching and Updates

Update to the latest version of Cesanta MJS to mitigate the heap buffer overflow vulnerability.