CVE-2023-26139 : Exploit Details and Defense Strategies

This article provides insights into CVE-2023-26139, including its impact, technical details, and mitigation strategies.

Understanding CVE-2023-26139

CVE-2023-26139 is a security vulnerability identified in the package underscore-keypath, affecting versions up to 0.0.11. This vulnerability is classified as Prototype Pollution and can be exploited through the name argument of the setProperty() function.

What is CVE-2023-26139?

CVE-2023-26139 refers to a vulnerability in the underscore-keypath package, allowing for Prototype Pollution due to improper input sanitization. This flaw enables attackers to utilize arguments like "proto" to manipulate prototype properties.

The Impact of CVE-2023-26139

The impact of CVE-2023-26139 is rated as high, with a base severity score of 7.5. While the confidentiality and integrity remain unaffected, the availability of the system is significantly compromised, making it crucial to address this vulnerability promptly.

Technical Details of CVE-2023-26139

The technical details of CVE-2023-26139 shed light on the vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability arises from inadequate input sanitization in the underscore-keypath package, specifically within the setProperty() function's name argument. This flaw allows malicious actors to inject harmful arguments like "proto" leading to potential security breaches.

Affected Systems and Versions

The underscore-keypath package version 0.0.11 and below are impacted by CVE-2023-26139. Systems utilizing these vulnerable versions are at risk of exploitation through Prototype Pollution, necessitating immediate action to mitigate the threat.

Exploitation Mechanism

Exploiting CVE-2023-26139 involves leveraging the vulnerability in the name argument of the setProperty() function within the underscore-keypath package. By manipulating this input inadequately sanitized, attackers can introduce harmful arguments to compromise the system.

Mitigation and Prevention

Addressing CVE-2023-26139 requires a proactive approach to enhance system security and minimize potential risks.

Immediate Steps to Take

Update the underscore-keypath package to a secure version beyond 0.0.11 to mitigate the vulnerability effectively.
Implement input sanitization techniques to prevent malicious input, reducing the likelihood of Prototype Pollution attacks.

Long-Term Security Practices

Regularly monitor for security advisories and updates related to the underscore-keypath package to stay informed about potential vulnerabilities.
Conduct security assessments to identify and address any existing vulnerabilities within the system proactively.

Patching and Updates

Stay informed about patches and updates released by the vendor to address CVE-2023-26139 effectively. Timely application of patches is crucial to bolster system security and protect against potential exploits.