CVE-2018-19210: Canonical Ubuntu Linux

Medium severity, CVSS 6.5. EPSS: 3.6% chance of exploitation in the next 30 days.

In LibTIFF 4.0.9, there is a NULL pointer dereference in the TIFFWriteDirectorySec function in tif_dirwrite.c that will lead to a denial of service attack, as demonstrated by tiffset.

Affected products

• Canonical Ubuntu Linux: version 14.04 only; version 16.04 only; version 18.04 only; version 18.10 only
• Debian Debian Linux: version 8.0 only
• Libtiff Libtiff: version 4.0.9 only

Published 2018-11-12. Last modified 2026-06-17.