CVE-2017-2819 : Exploit Details and Defense Strategies

This CVE-2017-2819 article provides insights into a vulnerability in the Hangul Word Processor component of Hancom Thinkfree Office NEO, potentially leading to code execution.

Understanding CVE-2017-2819

This CVE involves a heap-based buffer overflow in the Hangul Word Processor component of Hancom Thinkfree Office NEO, version 9.6.1.4902.

What is CVE-2017-2819?

The vulnerability arises from an integer underflow during the processing of a specially crafted document stream, resulting in a buffer overflow.
Exploiting this flaw can allow an attacker to execute arbitrary code within the application's context.

The Impact of CVE-2017-2819

CVSS Score: 8.8 (High)
Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: Required
Confidentiality, Integrity, and Availability Impact: High

Technical Details of CVE-2017-2819

This section delves into the specifics of the vulnerability.

Vulnerability Description

The vulnerability is a heap-based buffer overflow in the Hangul Word Processor component.

Affected Systems and Versions

Affected Product: Hangul Word Processor in Thinkfree Office NEO Trial Word
Vendor: Hancom
Affected Version: 9.6.1.4902

Exploitation Mechanism

The vulnerability occurs due to an integer underflow when processing a malicious document stream, leading to a buffer overflow.
An attacker can exploit this by tricking a user into opening a specially crafted document.

Mitigation and Prevention

Protecting systems from CVE-2017-2819 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the affected software to a patched version.
Be cautious when opening documents from untrusted sources.

Long-Term Security Practices

Regularly update software and apply security patches promptly.
Educate users on identifying and avoiding suspicious documents.

Patching and Updates

Ensure all software components are up to date with the latest security patches.