CVE-2021-34845 : What You Need to Know

A detailed analysis of CVE-2021-34845, a critical vulnerability affecting Foxit PDF Reader 11.0.0.49893.

Understanding CVE-2021-34845

This CVE involves a vulnerability in Foxit PDF Reader 11.0.0.49893 that allows remote attackers to execute arbitrary code.

What is CVE-2021-34845?

The vulnerability in Foxit PDF Reader 11.0.0.49893 enables remote attackers to execute arbitrary code. User interaction is required through visiting a malicious page or opening a malevolent file.

The Impact of CVE-2021-34845

The impact is severe with a CVSS base score of 7.8 (High Severity). Attackers can exploit this vulnerability to execute code in the context of the current process, leading to confidentiality, integrity, and availability impacts.

Technical Details of CVE-2021-34845

This section provides technical details about the vulnerability in Foxit PDF Reader 11.0.0.49893.

Vulnerability Description

The flaw exists within the handling of Annotation objects due to the lack of validating object existence before operations, allowing attackers to execute arbitrary code.

Affected Systems and Versions

Foxit PDF Reader version 11.0.0.49893 is impacted by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by persuading users to visit a malicious page or open a malicious file, triggering the execution of arbitrary code.

Mitigation and Prevention

Protecting systems from CVE-2021-34845 is crucial to prevent potential exploitation.

Immediate Steps to Take

Users must update Foxit PDF Reader to a patched version provided by the vendor immediately. Avoid visiting suspicious websites or opening files from untrusted sources.

Long-Term Security Practices

Regularly update software, use endpoint protection solutions, and educate users on identifying phishing attempts to enhance overall security posture.

Patching and Updates

Stay informed about security bulletins from Foxit and promptly apply patches to mitigate the risk of exploitation.