CVE-2018-11592 : Vulnerability Insights and Analysis

Espruino versions prior to 1.98 contain a vulnerability that could allow attackers to crash the application by exploiting an Out-of-bounds Read error during syntax parsing. This CVE was published by MITRE on October 3, 2022.

Understanding CVE-2018-11592

This CVE pertains to a specific issue found in Espruino versions before 1.98 that could be exploited by malicious actors to cause a denial of service by intentionally crashing the application.

What is CVE-2018-11592?

Espruino versions prior to 1.98 are susceptible to an attack where attackers can crash the application by providing a specially crafted input file that triggers an Out-of-bounds Read error during the syntax parsing stage. The vulnerability arises due to the lack of height validation in the libs/graphics/jswrap_graphics.c module.

The Impact of CVE-2018-11592

The exploitation of this vulnerability can lead to a denial of service, causing the application to crash, potentially disrupting normal operations and affecting system availability.

Technical Details of CVE-2018-11592

Espruino CVE-2018-11592 has the following technical details:

Vulnerability Description

The vulnerability in Espruino versions prior to 1.98 allows attackers to crash the application by exploiting an Out-of-bounds Read error during syntax parsing, specifically due to missing height validation in the libs/graphics/jswrap_graphics.c module.

Affected Systems and Versions

Affected Product: Espruino
Affected Versions: Versions prior to 1.98

Exploitation Mechanism

Attackers can exploit this vulnerability by providing a specially crafted input file that triggers an Out-of-bounds Read error during the syntax parsing stage.

Mitigation and Prevention

To mitigate the risks associated with CVE-2018-11592, consider the following steps:

Immediate Steps to Take

Update Espruino to version 1.98 or later to patch the vulnerability.
Avoid opening untrusted or suspicious files that could trigger the vulnerability.

Long-Term Security Practices

Regularly update software and firmware to ensure the latest security patches are applied.
Implement input validation mechanisms to prevent malicious inputs from causing vulnerabilities.

Patching and Updates

Ensure timely installation of patches and updates provided by Espruino to address known vulnerabilities and enhance system security.