CVE-2019-6773: 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 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 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. Was ZDI-CAN-8272.
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 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 CVE-2019-6773?
CVE-2019-6773 is rated as a moderate severity vulnerability that requires user interaction to be exploited.
How do I fix CVE-2019-6773?
To fix CVE-2019-6773, users should update their Foxit Reader or PhantomPDF to versions beyond 9.4.1.16828 or 8.3.9.41099 respectively.
Which versions are affected by CVE-2019-6773?
CVE-2019-6773 affects Foxit Reader versions up to and including 9.4.1.16828 and Foxit PhantomPDF versions up to and including 8.3.9.41099.
Is user interaction required to exploit CVE-2019-6773?
Yes, exploitation of CVE-2019-6773 requires the user to visit a malicious page or open a malicious file.
What kind of information does CVE-2019-6773 disclose?
CVE-2019-6773 allows remote attackers to disclose sensitive information on vulnerable installations of Foxit Reader and PhantomPDF.