CVE-2023-38239 : Exploit Details and Defense Strategies

Adobe Acrobat Reader versions 23.003.20244 (and earlier) and 20.005.30467 (and earlier) are affected by an out-of-bounds read vulnerability that could lead to disclosure of sensitive memory. This article provides an overview of CVE-2023-38239, its impact, technical details, and mitigation strategies.

Understanding CVE-2023-38239

This section delves into the specifics of the Adobe Acrobat Reader DC Font Parsing Out-Of-Bounds Read Information Disclosure Vulnerability.

What is CVE-2023-38239?

CVE-2023-38239 is an out-of-bounds read vulnerability in Adobe Acrobat Reader DC that allows attackers to access sensitive memory, potentially leading to information disclosure. Exploitation of this vulnerability requires user interaction.

The Impact of CVE-2023-38239

The vulnerability poses a medium-severity risk, with a CVSS base score of 5.5. It allows attackers to bypass mitigations like ASLR, compromising the confidentiality of sensitive information.

Technical Details of CVE-2023-38239

This section provides a deeper dive into the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability in Adobe Acrobat Reader DC's font parsing functionality allows for an out-of-bounds read, enabling attackers to access sensitive memory and potentially disclose confidential information.

Affected Systems and Versions

Adobe Acrobat Reader versions 23.003.20244 and 20.005.30467 (and earlier) are impacted by this vulnerability, making systems running these versions susceptible to exploitation.

Exploitation Mechanism

Exploiting CVE-2023-38239 requires user interaction, where a victim unknowingly opens a malicious file, triggering the out-of-bounds read vulnerability.

Mitigation and Prevention

Protecting systems against CVE-2023-38239 involves immediate actions and long-term security practices.

Immediate Steps to Take

Users should apply security patches provided by Adobe to mitigate the vulnerability. Avoid opening files from unknown or untrusted sources to reduce the risk of exploitation.

Long-Term Security Practices

Implement secure file handling protocols, regularly update Adobe Acrobat Reader to the latest version, and educate users on safe browsing habits to enhance overall security posture.

Patching and Updates

Stay informed about security updates from Adobe to patch known vulnerabilities promptly and ensure robust protection against potential threats.