PDF-XChange Editor U3D File Parsing Memory Corruption Remote Code Execution Vulnerability Advisory IDs: ZDI-22-1367 ZDI-CAN-18630 CVE ID: CVE-2022-42377 CVSS Score: 7.8, AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Affected Vendors: PDF-XChange Affected Products: PDF-XChange Editor Vulnerability Details: This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. User interaction is required to exploit this vulnerability, such as visiting a malicious page or opening a malicious file. The flaw occurs in the parsing of U3D files due to improper validation of user-supplied data, leading to memory corruption. An attacker can leverage this vulnerability to execute code in the context of the current process. Additional Details: PDF-XChange has issued an update to correct this vulnerability. More details can be found at: https://www.tracker-software.com/product/pdf-xchange-editor/history Disclosure Timeline: 2022-09-02 - Vulnerability reported to vendor 2022-10-07 - Coordinated public release of advisory Credit: Mat Powell of Trend Micro Zero Day Initiative