CVE-2018-10963: Canonical Ubuntu Linux

Medium severity, CVSS 6.5. EPSS: 3.7% chance of exploitation in the next 30 days.

The TIFFWriteDirectorySec() function in tif_dirwrite.c in LibTIFF through 4.0.9 allows remote attackers to cause a denial of service (assertion failure and application crash) via a crafted file, a different vulnerability than CVE-2017-13726.

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; version 9.0 only
• Libtiff Libtiff: up to and including 4.0.9

Published 2018-05-10. Last modified 2026-06-17.