CVE-2020-8848 : Security Advisory and Response

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader 9.7.0.29455. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the processing of JPG2000 images. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated structure. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-9407.

Understanding CVE-2020-8848

This CVE identifies a high-severity vulnerability in Foxit Reader version 9.7.0.29455.

What is CVE-2020-8848?

CVE-2020-8848 is a vulnerability that allows remote attackers to execute arbitrary code on systems running Foxit Reader 9.7.0.29455. The flaw lies in the processing of JPG2000 images due to improper validation of user-supplied data.

The Impact of CVE-2020-8848

The impact of this vulnerability is rated as high, with a CVSS base score of 7.8. It can lead to remote code execution on affected systems without the need for privileges.

Technical Details of CVE-2020-8848

This section provides technical details about the vulnerability.

Vulnerability Description

The vulnerability in Foxit Reader 9.7.0.29455 allows remote attackers to execute arbitrary code by exploiting the lack of proper validation in processing JPG2000 images.

Affected Systems and Versions

Product: Foxit Reader
Vendor: Foxit
Version: 9.7.0.29455

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Local
User Interaction: Required
Scope: Unchanged
Privileges Required: None
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High

Mitigation and Prevention

Protecting systems from CVE-2020-8848 requires immediate action and long-term security practices.

Immediate Steps to Take

Update Foxit Reader to a patched version immediately.
Avoid visiting suspicious or untrusted websites.
Exercise caution when opening files from unknown sources.

Long-Term Security Practices

Regularly update software and applications to the latest versions.
Implement security measures such as firewalls and antivirus software.
Educate users on safe browsing habits and the risks of opening unknown files.

Patching and Updates

Ensure that Foxit Reader is regularly updated with the latest security patches to mitigate the risk of exploitation.