Discover the impact of CVE-2021-21870, a high-severity use-after-free vulnerability in Foxit Reader 10.1.4.37651. Learn about mitigation strategies and security measures.
A detailed overview of CVE-2021-21870, a use-after-free vulnerability in Foxit Software's PDF Reader version 10.1.4.37651, impacting system security.
Understanding CVE-2021-21870
This section provides insights into the vulnerability, its impact, technical details, and mitigation strategies.
What is CVE-2021-21870?
CVE-2021-21870 involves a use-after-free flaw in Foxit's PDF Reader, allowing arbitrary code execution through a malicious PDF document if the user interacts with a file or site with a browser plugin enabled.
The Impact of CVE-2021-21870
With a CVSS base score of 8.8 (High), this vulnerability poses severe risks to system confidentiality, integrity, and availability. Attackers can take advantage of this flaw to execute malicious code.
Technical Details of CVE-2021-21870
This section delves deeper into the vulnerability, affected systems, and exploitation mechanisms.
Vulnerability Description
The use-after-free vulnerability in Foxit Reader 10.1.4.37651 results from memory reuse triggered by a crafted PDF file, enabling malicious code execution.
Affected Systems and Versions
Foxit Reader 10.1.4.37651 is affected by this vulnerability.
Exploitation Mechanism
Attackers exploit this flaw by tricking users into opening a specially crafted PDF document or site with an enabled browser plugin.
Mitigation and Prevention
Explore precautionary measures and actions to mitigate the risks associated with CVE-2021-21870.
Immediate Steps to Take
Users are advised to disable the browser plugin extension for Foxit Reader and refrain from opening unfamiliar PDF files or visiting suspicious sites.
Long-Term Security Practices
Regularly update Foxit Reader to the latest version, maintain good browsing practices, and educate users on safe file handling.
Patching and Updates
Stay vigilant for security updates from Foxit Software to address CVE-2021-21870 and other potential vulnerabilities.