CVE-2018-1000039: artifex mupdf Use After Free

Vulnerability summary

CVE-2018-1000039 is a high (CVSS 7.8) Use After Free vulnerability in artifex mupdf. EPSS estimates a 1.82% chance of exploitation in the next 30 days, higher than 78.3% of scored vulnerabilities. 4 public exploits are recorded.

Timeline

1. 24-05-2018
   PublishedVulnerability first disclosed.
2. 05-08-2024
   Last modifiedVulnerability information updated.

Description

In Artifex MuPDF 1.12.0 and earlier, multiple heap use after free bugs in the PDF parser could allow an attacker to execute arbitrary code, read memory, or cause a denial of service via a crafted file.

• 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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.