CVE-2020-23311 Explained : Impact and Mitigation

This CVE-2020-23311 article provides insights into a specific vulnerability in JerryScript 2.2.0, highlighting its impact, technical details, and mitigation strategies.

Understanding CVE-2020-23311

This section delves into the nature of the vulnerability and its implications.

What is CVE-2020-23311?

The vulnerability involves an assertion failure in JerryScript 2.2.0, specifically in the parser_parse_object_initializer function at js-parser-expr.c:3230.

The Impact of CVE-2020-23311

The vulnerability can potentially be exploited to cause a denial of service or execute arbitrary code on systems running the affected version.

Technical Details of CVE-2020-23311

Explore the technical aspects of the CVE in this section.

Vulnerability Description

The vulnerability arises from a failed assertion related to specific token types in the parser_parse_object_initializer function.

Affected Systems and Versions

Affected Version: JerryScript 2.2.0
Systems running JerryScript 2.2.0 are vulnerable to this assertion failure.

Exploitation Mechanism

Attackers can potentially exploit this vulnerability to disrupt services or execute malicious code by triggering the assertion failure.

Mitigation and Prevention

Discover the steps to mitigate and prevent exploitation of CVE-2020-23311.

Immediate Steps to Take

Update JerryScript to a patched version that addresses the assertion failure.
Monitor for any unusual activities on systems running the vulnerable version.

Long-Term Security Practices

Regularly update software and libraries to prevent known vulnerabilities.
Implement code review processes to catch assertion failures and other potential vulnerabilities early.

Patching and Updates

Stay informed about security updates for JerryScript and apply patches promptly to secure systems against known vulnerabilities.