ZDI-19-447: Foxit Reader AcroForm richValue Use-After-Free Information Disclosure Vulnerability
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 handling of the richValue property of a Field object within 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
Event History
Frequently Asked Questions
What is the severity of ZDI-19-447?
The severity of ZDI-19-447 is classified as medium due to the potential for sensitive information disclosure.
How do I fix ZDI-19-447?
To fix ZDI-19-447, ensure that you update Foxit Reader to the latest version provided by the vendor.
What kind of attacks can exploit ZDI-19-447?
ZDI-19-447 can be exploited through socially engineered attacks, requiring user interaction to visit a malicious webpage or open a compromised file.
What versions of Foxit Reader are affected by ZDI-19-447?
ZDI-19-447 affects vulnerable installations of Foxit Reader prior to the patches released by the vendor.
Is user interaction required to exploit ZDI-19-447?
Yes, user interaction is required for exploiting ZDI-19-447, as the victim must visit a malicious page or open a malicious file.