CVE-2021-34959: Foxit PDF Editor Square Annotation Use-After-Free Remote Code Execution Vulnerability
Foxit PDF Editor Square Annotation Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Editor. 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 Annotation objects. 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-14360.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2021-34959?
CVE-2021-34959 has been classified as a high severity vulnerability due to the potential for remote code execution.
How do I fix CVE-2021-34959?
To mitigate CVE-2021-34959, users should update their Foxit PDF Editor to the latest version that addresses this vulnerability.
What type of vulnerability is CVE-2021-34959?
CVE-2021-34959 is a use-after-free vulnerability that can lead to remote code execution.
Is user interaction required to exploit CVE-2021-34959?
Yes, user interaction is required to exploit CVE-2021-34959, as the target must open a maliciously crafted document.
What software is affected by CVE-2021-34959?
CVE-2021-34959 affects Foxit PDF Editor, specifically Foxit PhantomPDF for Windows.