CVE-2017-17973: libtiff Use After Free

Vulnerability summary

CVE-2017-17973 is a high (CVSS 8.8) Use After Free vulnerability in libtiff. EPSS estimates a 3.05% chance of exploitation in the next 30 days, higher than 87.4% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 29-12-2017
   PublishedVulnerability first disclosed.
2. 05-08-2024
   Last modifiedVulnerability information updated.

Description

In LibTIFF 4.0.8, there is a heap-based use-after-free in the t2p_writeproc function in tiff2pdf.c. NOTE: there is a third-party report of inability to reproduce this issue

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.