CVE-2023-21584 : Exploit Details and Defense Strategies

This CVE relates to a Use-After-Free information disclosure vulnerability in Adobe FrameMaker Font Parsing that could potentially lead to the disclosure of sensitive memory.

Understanding CVE-2023-21584

This CVE impacts Adobe FrameMaker 2020 Update 4 and earlier versions, as well as FrameMaker 2022 and earlier versions. The vulnerability could allow an attacker to exploit a Use After Free vulnerability, bypassing mitigations such as ASLR. Exploiting this vulnerability requires user interaction, specifically, the victim must open a malicious file.

What is CVE-2023-21584?

CVE-2023-21584 is a security vulnerability in Adobe FrameMaker's font parsing functionality, leading to a Use-After-Free issue that can result in the disclosure of sensitive memory.

The Impact of CVE-2023-21584

This vulnerability has a CVSSv3 base score of 5.5, categorizing it as a medium severity issue. It can have a high impact on confidentiality as it could potentially lead to the exposure of sensitive information stored in memory.

Technical Details of CVE-2023-21584

This section provides more detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability in Adobe FrameMaker Font Parsing could allow an attacker to exploit a Use After Free flaw, leading to the disclosure of sensitive memory data.

Affected Systems and Versions

The vulnerability impacts Adobe FrameMaker 2020 Update 4 and earlier, as well as 2022 and earlier versions of the software.

Exploitation Mechanism

Exploiting this vulnerability requires user interaction, where a victim needs to open a specifically crafted malicious file to trigger the issue.

Mitigation and Prevention

It is crucial to take immediate steps to protect systems and prevent potential exploitation of CVE-2023-21584.

Immediate Steps to Take

Users are advised to update Adobe FrameMaker to the latest version available, which includes patches to address this vulnerability. Additionally, exercising caution while opening files from untrusted or unknown sources can reduce the risk of exploitation.

Long-Term Security Practices

Implementing strong cybersecurity measures such as regular software updates, security training for users, and employing threat intelligence solutions can enhance the overall security posture and mitigate the risk of similar vulnerabilities in the future.

Patching and Updates

Adobe has released security updates to address CVE-2023-21584. Users should promptly apply these patches to ensure their systems are protected from potential exploitation.