CVE-2023-31921 Explained : Impact and Mitigation

This article discusses the vulnerability identified as CVE-2023-31921 in Jerryscript 3.0, highlighting its impact, technical details, and mitigation strategies.

Understanding CVE-2023-31921

CVE-2023-31921 reveals an assertion failure in Jerryscript 3.0, specifically in the ecma_big_uint_div_mod function located at jerry-core/ecma/operations/ecma-big-uint.c.

What is CVE-2023-31921?

The CVE-2023-31921 vulnerability is associated with Jerryscript 3.0 (commit 05dbbd1) and stems from an assertion failure in the ecma_big_uint_div_mod function.

The Impact of CVE-2023-31921

The vulnerability poses a risk due to the assertion failure present in the Jerryscript 3.0 codebase, potentially leading to security breaches or system crashes.

Technical Details of CVE-2023-31921

The technical aspects of CVE-2023-31921 include a detailed vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability arises from an assertion failure within the ecma_big_uint_div_mod function in Jerryscript 3.0, impacting the overall reliability and security of the software.

Affected Systems and Versions

Jerryscript 3.0 (commit 05dbbd1) is specifically affected by this vulnerability, potentially leaving systems utilizing this version at risk.

Exploitation Mechanism

The exploitation of CVE-2023-31921 may involve triggering the assertion failure in the ecma_big_uint_div_mod function to compromise the integrity of the affected systems.

Mitigation and Prevention

To address CVE-2023-31921, immediate actions, long-term security practices, and the importance of patching and updates are essential.

Immediate Steps to Take

Organizations should consider implementing workarounds, restricting access, or monitoring systems closely to mitigate immediate risks associated with the vulnerability.

Long-Term Security Practices

Establishing robust security protocols, conducting regular security assessments, and staying informed about potential vulnerabilities can enhance long-term defense against such security threats.

Patching and Updates

Regularly applying patches and software updates, especially those addressing CVE-2023-31921 in Jerryscript 3.0, is crucial to maintaining the security and integrity of systems.