CVE-2019-14751 Explained : Impact and Mitigation

NLTK Downloader versions prior to 3.4.5 have a vulnerability allowing directory traversal, enabling attackers to write files using '../' in an NLTK package.

Understanding CVE-2019-14751

This CVE involves a security vulnerability in NLTK Downloader that can be exploited through directory traversal.

What is CVE-2019-14751?

NLTK Downloader before version 3.4.5 is susceptible to a directory traversal flaw that permits attackers to write arbitrary files by utilizing '../' in an NLTK package during extraction.

The Impact of CVE-2019-14751

The vulnerability in NLTK Downloader could lead to unauthorized file writing by malicious actors, potentially compromising the integrity and security of the system.

Technical Details of CVE-2019-14751

This section provides more in-depth technical insights into the CVE-2019-14751 vulnerability.

Vulnerability Description

NLTK Downloader versions earlier than 3.4.5 are prone to a directory traversal issue, allowing attackers to write any type of files by exploiting the mishandling of '../' in an NLTK package during extraction.

Affected Systems and Versions

Product: NLTK Downloader
Vendor: Not applicable
Vulnerable Versions: All versions before 3.4.5

Exploitation Mechanism

The vulnerability can be exploited through directory traversal by inserting '../' in an NLTK package during the extraction process, enabling attackers to write unauthorized files.

Mitigation and Prevention

Protecting systems from CVE-2019-14751 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update NLTK Downloader to version 3.4.5 or later to mitigate the vulnerability.
Regularly monitor for security advisories and patches from NLTK.

Long-Term Security Practices

Implement secure coding practices to prevent directory traversal vulnerabilities.
Conduct regular security assessments and audits to identify and address potential security weaknesses.

Patching and Updates

Apply patches and updates provided by NLTK promptly to address security vulnerabilities and enhance system security.