CVE-2021-21034 : Exploit Details and Defense Strategies
Learn about CVE-2021-21034 affecting Adobe Acrobat Reader DC versions, enabling privilege escalation. Follow mitigation steps and apply security updates for protection.
A vulnerability has been identified in Adobe Acrobat Reader DC versions that could allow an unauthenticated attacker to locally elevate privileges in the context of the current user. This article provides detailed insights into CVE-2021-21034.
Understanding CVE-2021-21034
This section delves into what CVE-2021-21034 is, its impact, technical details, and mitigation strategies.
What is CVE-2021-21034?
Acrobat Reader DC versions 2020.013.20074 and earlier, 2020.001.30018 and earlier, and 2017.011.30188 and earlier are affected by an Out-of-bounds Read vulnerability. The exploitation of this vulnerability requires user interaction.
The Impact of CVE-2021-21034
The vulnerability can be exploited by an unauthenticated attacker to elevate privileges locally. The attacker would require the victim to open a malicious file for successful exploitation.
Technical Details of CVE-2021-21034
This section covers the specific technical aspects of the vulnerability.
Vulnerability Description
The vulnerability in Acrobat Reader DC allows an attacker to perform an Out-of-bounds Read, leading to information disclosure and potential privilege escalation.
Affected Systems and Versions
The affected versions include Acrobat Reader DC versions 2020.013.20074, 2020.001.30018, and 2017.011.30188.
Exploitation Mechanism
Exploitation of this vulnerability requires the victim to interact with a malicious file, enabling the attacker to locally elevate privileges.
Mitigation and Prevention
This section outlines the steps to mitigate the risks associated with CVE-2021-21034.
Immediate Steps to Take
Users are advised to apply the latest security updates provided by Adobe to address this vulnerability.
Long-Term Security Practices
Maintaining regular software updates, security patches, and user awareness training can help prevent such vulnerabilities.
Patching and Updates
Adobe has released security updates to address the CVE-2021-21034 vulnerability. Users should ensure that their software is updated to the latest patched versions.