Zero Day Initiative AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Zero Day Initiative CWE-122

PDF-XChange Editor PDF File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange 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 parsing of PDF files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-19640.

Zero Day Initiative https://www.zerodayinitiative.com/advisories/ZDI-23-1133/ [No types assigned]