CVE-2018-11593 : Security Advisory and Response

Espruino before version 1.99 is vulnerable to a Buffer Overflow issue that can be exploited by attackers to cause a denial of service and potentially disclose information.

Understanding CVE-2018-11593

This CVE involves a vulnerability in Espruino versions prior to 1.99 that can lead to a denial of service and information disclosure.

What is CVE-2018-11593?

Espruino versions before 1.99 are susceptible to a Buffer Overflow vulnerability that can be triggered by a specially crafted input file during syntax parsing, resulting in a denial of service and potential information exposure. The flaw originates from the incorrect use of the strncpy function in the jslex.c file.

The Impact of CVE-2018-11593

The exploitation of this vulnerability can lead to a denial of service condition, causing an application crash, and potentially exposing sensitive information to unauthorized parties.

Technical Details of CVE-2018-11593

Espruino CVE-2018-11593 involves the following technical aspects:

Vulnerability Description

The vulnerability allows attackers to exploit a Buffer Overflow in Espruino versions prior to 1.99, leading to a denial of service and potential information disclosure.

Affected Systems and Versions

Product: Espruino
Vendor: N/A
Versions affected: All versions prior to 1.99

Exploitation Mechanism

Attackers can exploit this vulnerability by providing a specifically crafted input file that triggers a Buffer Overflow during the syntax parsing process, due to the incorrect usage of the strncpy function in the jslex.c file.

Mitigation and Prevention

To address CVE-2018-11593, consider the following mitigation strategies:

Immediate Steps to Take

Update Espruino to version 1.99 or later to mitigate the vulnerability.
Implement input validation mechanisms to prevent malicious inputs.

Long-Term Security Practices

Regularly monitor security advisories and update systems promptly.
Conduct security assessments and code reviews to identify and address vulnerabilities.

Patching and Updates

Apply patches and updates provided by Espruino to fix the Buffer Overflow vulnerability.