Vulnerability DatabaseCVE-2021-34967

CVE-2021-34967:
Foxit PDF Reader vulnerability analysis and mitigation

Overview

CVE-2021-34967 is a Line Annotation Use-After-Free Remote Code Execution Vulnerability affecting Foxit PDF Editor. The vulnerability was discovered and reported on August 11, 2021, and publicly disclosed on October 15, 2021. This security flaw affects installations of Foxit PDF Editor and requires user interaction for exploitation (Zero Day Initiative).

Technical details

The vulnerability exists within the handling of Annotation objects in Foxit PDF Editor. The specific issue stems from the lack of validating the existence of an object prior to performing operations on the object. The vulnerability has been assigned a CVSS v3.0 score of 7.8 (HIGH) with the vector string: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H (Zero Day Initiative).

Impact

If successfully exploited, this vulnerability allows attackers to execute arbitrary code in the context of the current process. The attack requires user interaction, specifically that the target must visit a malicious page or open a malicious file (Zero Day Initiative).

Mitigation and workarounds

Foxit has released security updates to address this vulnerability. Users are advised to update their Foxit PDF Editor installations to the latest version. The fix is available through the official security bulletin (Foxit Security Bulletins).