CVE-2019-6766: Foxit Reader AcroForm removeField Use-After-Free Information Disclosure Vulnerability
This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Foxit Reader 9.4.1.16828. 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 removeField method when processing AcroForms. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the current process. Was ZDI-CAN-8162.
Other sources
This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Foxit Reader. 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 removeField method when processing AcroForms. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the current process.
Affected Software
Remediation
Patch Available
Event History
Frequently Asked Questions
What is the severity of CVE-2019-6766?
CVE-2019-6766 is classified as a medium-severity vulnerability, allowing information disclosure.
How do I fix CVE-2019-6766?
To mitigate CVE-2019-6766, users should upgrade Foxit Reader to the latest version that is not affected.
What does CVE-2019-6766 affect?
CVE-2019-6766 affects specific versions of Foxit Reader and Foxit PhantomPDF on Windows.
Is user interaction required to exploit CVE-2019-6766?
Yes, exploitation of CVE-2019-6766 requires user interaction, such as visiting a malicious page or opening a harmful file.
What are the potential consequences of CVE-2019-6766?
The potential consequences of CVE-2019-6766 include the unauthorized disclosure of sensitive information.