CVE-2018-19452: foxitsoftware foxit_pdf_sdk_activex Use After Free

Vulnerability summary

CVE-2018-19452 is a high (CVSS 7.8) Use After Free vulnerability in foxitsoftware foxit_pdf_sdk_activex. EPSS estimates a 2.90% chance of exploitation in the next 30 days, higher than 86.7% of scored vulnerabilities.

Timeline

1. 07-06-2019
   PublishedVulnerability first disclosed.
2. 05-08-2024
   Last modifiedVulnerability information updated.

Description

A use after free in the TextBox field Mouse Enter action in IReader_ContentProvider can occur for specially crafted PDF files in Foxit Reader SDK (ActiveX) Professional 5.4.0.1031. An attacker can leverage this to gain remote code execution. Relative to CVE-2018-19444, this has a different free location and requires different JavaScript code for exploitation.

• CWE-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.