CVE-2021-45064 : Exploit Details and Defense Strategies

Adobe Acrobat Reader DC version 21.007.20099 and earlier, 20.004.30017 and earlier, and 17.011.30204 and earlier are affected by a use-after-free vulnerability in the processing of Format event actions, potentially leading to arbitrary code execution.

Understanding CVE-2021-45064

What is CVE-2021-45064?

CVE-2021-45064 is a use-after-free vulnerability in Adobe Acrobat Reader DC that could allow an attacker to execute arbitrary code by exploiting the processing of Format event actions.

The Impact of CVE-2021-45064

The vulnerability has a CVSS base score of 7.8, classified as high severity, with significant impacts on confidentiality, integrity, and availability of affected systems. User interaction is required for successful exploitation.

Technical Details of CVE-2021-45064

Vulnerability Description

The vulnerability lies in the processing of Format event actions in Adobe Acrobat Reader DC, potentially leading to arbitrary code execution in the context of the current user.

Affected Systems and Versions

Adobe Acrobat Reader DC version 21.007.20099 and earlier
Adobe Acrobat Reader DC version 20.004.30017 and earlier
Adobe Acrobat Reader DC version 17.011.30204 and earlier

Exploitation Mechanism

Successful exploitation requires an attacker to trick a user into opening a malicious file, triggering the vulnerability and potentially leading to arbitrary code execution.

Mitigation and Prevention

Immediate Steps to Take

Update Adobe Acrobat Reader DC to the latest version available.
Be cautious while opening files from untrusted or unknown sources.
Implement security awareness training to educate users on recognizing phishing attempts.

Long-Term Security Practices

Regularly update software and applications to patch known vulnerabilities.
Employ security solutions like antivirus programs and intrusion detection systems.

Patching and Updates

Ensure timely installation of security updates provided by Adobe to mitigate the risk of exploitation.