CVE-2019-17140 : What You Need to Know
Learn about CVE-2019-17140, a critical vulnerability in Foxit PhantomPDF version 9.6.0.25114 that allows remote code execution. Find out the impact, affected systems, and mitigation steps.
An exploit was found in the Foxit PhantomPDF software version 9.6.0.25114, allowing attackers to remotely run any code on affected installations by exploiting a vulnerability in how the software handles the OnFocus event.
Understanding CVE-2019-17140
This CVE involves a critical vulnerability in Foxit PhantomPDF version 9.6.0.25114 that enables remote code execution on affected systems.
What is CVE-2019-17140?
The vulnerability in Foxit PhantomPDF version 9.6.0.25114 allows attackers to execute arbitrary code on affected installations. User interaction is required, such as visiting a malicious page or opening a malicious file, for the exploit to be successful. The flaw lies in the software's handling of the OnFocus event, where it fails to validate the presence of an object before performing operations on it.
The Impact of CVE-2019-17140
- CVSS Score: 7.8 (High Severity)
- Attack Vector: Local
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: Required
- Confidentiality, Integrity, and Availability Impact: High
Technical Details of CVE-2019-17140
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability is classified as CWE-416: Use After Free. It allows attackers to execute code within the current process by exploiting the software's handling of the OnFocus event.
Affected Systems and Versions
- Affected Product: PhantomPDF
- Vendor: Foxit
- Affected Version: 9.6.0.25114
Exploitation Mechanism
Attackers can exploit this vulnerability by tricking a user into interacting with a malicious page or opening a malicious file, triggering the execution of arbitrary code within the current process.
Mitigation and Prevention
Protecting systems from CVE-2019-17140 requires immediate action and long-term security practices.
Immediate Steps to Take
- Update Foxit PhantomPDF to a patched version immediately.
- Avoid interacting with suspicious or untrusted links and files.
Long-Term Security Practices
- Regularly update software and security patches.
- Educate users on safe browsing habits and the risks of interacting with unknown sources.
Patching and Updates
Ensure that all security patches and updates provided by Foxit are promptly applied to mitigate the vulnerability.