CVE-2019-6763 Use after free in Reader
Remote attackers can execute arbitrary code via a malicious file or page due to a use-after-free flaw in Foxit Reader's ActiveX control.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2019-6763?
CVE-2019-6763 is a high-severity use after free vulnerability in Foxitsoftware Foxit Reader, published on 3 Jun 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
This vulnerability allows remote attackers to execute arbitrary code 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 ToggleFormsDesign method of the Foxit.FoxitReader.Ctl ActiveX object. 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 vulnerability to execute code in the context of the current process. Was ZDI-CAN-7874.
Weakness: CWE-416
Which versions are affected by CVE-2019-6763?
It affects 2 products.
Products include Foxitsoftware Foxit Reader, Foxitsoftware Phantompdf.
How do I fix CVE-2019-6763?
No fix has been published for CVE-2019-6763 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2019-6763 being exploited?
There is no known exploitation of CVE-2019-6763 in the wild and no public exploit code.
Other vulnerabilities in Foxitsoftware Foxit Reader
Sources
Also known as GHSA-q6r2-vh2h-6wwj.