CVE-2022-28256 Explained : Impact and Mitigation

Adobe Acrobat Reader DC Annotation Use-After-Free Information Disclosure Vulnerability.

Understanding CVE-2022-28256

This CVE refers to a use-after-free vulnerability in Adobe Acrobat Reader DC, impacting versions prior to 22.001.2011x, 20.005.3033x, and 17.012.3022x.

What is CVE-2022-28256?

Acrobat Reader DC versions mentioned are affected by a use-after-free vulnerability that could expose sensitive memory, potentially allowing an attacker to bypass mitigations like ASLR. Exploitation requires the victim to open a malicious file.

The Impact of CVE-2022-28256

With a CVSS base score of 5.5 (Medium severity), this vulnerability has a high impact on confidentiality and could lead to information disclosure.

Technical Details of CVE-2022-28256

Vulnerability Description

The vulnerability involves a use-after-free issue affecting Adobe Acrobat Reader DC versions, potentially leading to memory disclosure.

Affected Systems and Versions

Acrobat Reader versions prior to 22.001.2011x, 20.005.3033x, and 17.012.3022x are affected by this vulnerability.

Exploitation Mechanism

Exploiting this vulnerability requires user interaction, where a victim must open a specially crafted malicious file.

Mitigation and Prevention

Immediate Steps to Take

Users are advised to update Adobe Acrobat Reader to the latest version to mitigate this vulnerability.

Long-Term Security Practices

Practicing safe browsing habits, avoiding opening files from untrusted sources, and keeping software up to date are essential for long-term security.

Patching and Updates

Refer to Adobe's security advisory (https://helpx.adobe.com/security/products/acrobat/apsb22-16.html) for guidance on applying patches and updates.