CVE-2021-28643 : Security Advisory and Response

Adobe Acrobat Pro DC versions 2021.005.20054 and earlier, 2020.004.30005 and earlier, as well as 2017.011.30197 and earlier, are affected by a Type Confusion vulnerability. This vulnerability could be exploited by an unauthenticated attacker to disclose sensitive memory information with the user's context upon opening a malicious file.

Understanding CVE-2021-28643

This CVE affects Adobe Acrobat Pro DC versions and exposes users to potential information disclosure due to a type confusion vulnerability.

What is CVE-2021-28643?

CVE-2021-28643 is a Type Confusion vulnerability in Adobe Acrobat Pro DC that allows attackers to reveal sensitive memory information in the current user's context without authentication.

The Impact of CVE-2021-28643

The impact of this vulnerability is rated as Low severity, requiring user interaction to exploit and potentially leading to the exposure of confidential information.

Technical Details of CVE-2021-28643

Adobe Acrobat Pro DC is affected by a Type Confusion vulnerability, exposing sensitive memory information to unauthorized users upon interacting with a malicious file.

Vulnerability Description

The vulnerability allows unauthenticated attackers to disclose sensitive memory information within the user context, potentially leading to security breaches.

Affected Systems and Versions

Adobe Acrobat Pro DC versions 2021.005.20054, 2020.004.30005, and 2017.011.30197, along with earlier versions, are impacted by this vulnerability.

Exploitation Mechanism

To exploit CVE-2021-28643, an attacker would require a victim to open a specifically crafted malicious file, initiating the process of disclosing sensitive memory information.

Mitigation and Prevention

To safeguard systems against CVE-2021-28643, immediate steps should be taken to address the vulnerability, followed by the implementation of long-term security practices.

Immediate Steps to Take

Users are advised to update Adobe Acrobat Pro DC to the latest version and exercise caution when opening files from untrusted sources.

Long-Term Security Practices

In the long term, users should prioritize regular software updates, employ security best practices, and enhance user awareness to prevent similar vulnerabilities.

Patching and Updates

Ensure that all systems running Adobe Acrobat Pro DC are regularly updated with the latest patches and security fixes to mitigate the risk of exposure to this type confusion vulnerability.