CVE-2021-28559 : Exploit Details and Defense Strategies
Learn about CVE-2021-28559 impacting Adobe Acrobat Reader versions. An Information Exposure flaw could lead to unauthorized access to sensitive data. Take immediate action for mitigation.
Adobe Acrobat Reader DC versions 2021.001.20150, 2020.001.30020, and 2017.011.30194 are affected by an Information Exposure vulnerability, potentially enabling unauthorized access to restricted data within global variables and objects.
Understanding CVE-2021-28559
This CVE refers to a privacy violation vulnerability in Adobe Acrobat Reader that could lead to privilege escalation.
What is CVE-2021-28559?
CVE-2021-28559 highlights a security flaw in Acrobat Reader versions where unauthenticated attackers can exploit an Information Exposure vulnerability to access confidential data.
The Impact of CVE-2021-28559
The vulnerability could result in unauthorized parties gaining access to restricted information stored within the application, potentially leading to privacy breaches and privilege escalation.
Technical Details of CVE-2021-28559
The vulnerability is rated as medium severity with a CVSS base score of 5.3. It has a low attack complexity and affects Acrobat Reader versions that meet specific criteria.
Vulnerability Description
The Information Exposure vulnerability in affected Adobe Acrobat Reader versions allows attackers to access global variables and objects, potentially exposing private data.
Affected Systems and Versions
Acrobat Reader versions 2021.001.20150, 2020.001.30020, and 2017.011.30194 are confirmed to be vulnerable to this issue.
Exploitation Mechanism
Attackers can exploit this vulnerability over a network with low complexity and without requiring privileges or user interaction.
Mitigation and Prevention
To address CVE-2021-28559, users should take immediate steps and implement long-term security practices.
Immediate Steps to Take
Users are advised to update their Adobe Acrobat Reader to the latest version available and review Adobe's security advisory for further guidance.
Long-Term Security Practices
Maintaining updated software, implementing access controls, and regularly monitoring for security advisories are essential for mitigating future risks.
Patching and Updates
Adobe has released security updates to address the vulnerability. It is crucial for users to apply these patches promptly to secure their systems.