CVE-2020-23303 : Security Advisory and Response

This CVE-2020-23303 article provides insights into a heap-buffer-overflow vulnerability in JerryScript 2.2.0.

Understanding CVE-2020-23303

What is CVE-2020-23303?

CVE-2020-23303 is a heap-buffer-overflow vulnerability located at jmem-poolman.c:165 in jmem_pools_collect_empty within JerryScript 2.2.0.

The Impact of CVE-2020-23303

This vulnerability could allow an attacker to execute arbitrary code or cause a denial of service by triggering a buffer overflow.

Technical Details of CVE-2020-23303

Vulnerability Description

The vulnerability exists in JerryScript 2.2.0 due to improper handling of memory buffers, leading to a heap-buffer-overflow at jmem-poolman.c:165.

Affected Systems and Versions

Affected Version: JerryScript 2.2.0

Exploitation Mechanism

The vulnerability can be exploited by a remote attacker to execute malicious code or crash the application by sending crafted input.

Mitigation and Prevention

Immediate Steps to Take

Update JerryScript to a patched version that addresses the heap-buffer-overflow vulnerability.
Monitor security advisories for any patches or workarounds.

Long-Term Security Practices

Implement secure coding practices to prevent buffer overflows and other memory-related vulnerabilities.
Conduct regular security assessments and code reviews to identify and mitigate similar issues.

Patching and Updates

Apply security patches provided by the JerryScript project to fix the heap-buffer-overflow vulnerability.