CVE-2023-40471: pdf-xchange pdf-tools Untrusted Pointer Dereference

Vulnerability summary

CVE-2023-40471 is a high (CVSS 7.8) Untrusted Pointer Dereference vulnerability in pdf-xchange pdf-tools. EPSS estimates a 0.39% chance of exploitation in the next 30 days, higher than 32.4% of scored vulnerabilities.

Timeline

1. 03-05-2024
   PublishedVulnerability first disclosed.
2. 02-08-2024
   Last modifiedVulnerability information updated.

Description

PDF-XChange Editor App Untrusted Pointer Dereference 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 handling of App objects. The issue results from the lack of proper validation of a user-supplied value prior to dereferencing it as a pointer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-20729.

• CWE-822Untrusted Pointer DereferenceThe product obtains a value from an untrusted source, converts this value to a pointer, and dereferences the resulting pointer.