CVE-2023-31919 : Exploit Details and Defense Strategies

This article provides detailed information about CVE-2023-31919, a vulnerability found in Jerryscript 3.0.

Understanding CVE-2023-31919

CVE-2023-31919 is a security vulnerability discovered in Jerryscript 3.0, specifically in commit 05dbbd1. The vulnerability allows an Assertion Failure via the

jcontext_raise_exception

function in

jerry-core/jcontext/jcontext.c

.

What is CVE-2023-31919?

CVE-2023-31919 is a flaw in Jerryscript 3.0 that can be exploited to trigger an Assertion Failure through a specific function in the script's context file.

The Impact of CVE-2023-31919

This vulnerability can potentially be exploited by attackers to cause a denial of service or execute arbitrary code on systems using the affected version of Jerryscript.

Technical Details of CVE-2023-31919

The technical details of CVE-2023-31919 include:

Vulnerability Description

The vulnerability allows attackers to trigger an Assertion Failure in Jerryscript 3.0, impacting the reliability and security of applications utilizing this JavaScript engine.

Affected Systems and Versions

All systems using Jerryscript 3.0 with commit 05dbbd1 are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious input to trigger the vulnerable function, leading to a crash or potential code execution.

Mitigation and Prevention

To address CVE-2023-31919, follow the mitigation strategies provided below.

Immediate Steps to Take

Update Jerryscript to a patched version that addresses the vulnerability.
Restrict access to systems running the affected version of Jerryscript.

Long-Term Security Practices

Regularly monitor for security updates and patches related to Jerryscript.
Implement strict input validation and error handling practices in applications to minimize the impact of such vulnerabilities.

Patching and Updates

Apply patches and updates provided by the Jerryscript project promptly to ensure the security of the software.