CVE-2023-42058: 
PDF-XChange Editor vulnerability analysis and mitigation

PDF-XChange Editor contains a remote code execution vulnerability (CVE-2023-42058) discovered in 2023. The vulnerability exists within the parsing of U3D files and was disclosed on September 8, 2023. The issue affects PDF-XChange Editor installations and requires user interaction, specifically opening a malicious file or visiting a malicious page to be exploited (ZDI Advisory).

The vulnerability stems from improper validation of user-supplied data during U3D file parsing, which can result in an out-of-bounds read past the end of an allocated object. The issue has been assigned a CVSS v3.0 score of 7.8 (High) with the vector string AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, indicating local access, low attack complexity, no privileges required, and user interaction required (ZDI Advisory).

If successfully exploited, this vulnerability allows attackers to execute arbitrary code in the context of the current process. This could potentially lead to complete compromise of the affected system, with the attacker gaining the same privileges as the application running the vulnerable code (ZDI Advisory).

PDF-XChange has released an update to address this vulnerability. Users are advised to update their installations to the latest version available through the vendor's security bulletins page (Security Bulletin).