CVE-2018-17407: Canonical Ubuntu Linux

High severity, CVSS 7.8. EPSS: 2.1% chance of exploitation in the next 30 days.

An issue was discovered in t1_check_unusual_charstring functions in writet1.c files in TeX Live before 2018-09-21. A buffer overflow in the handling of Type 1 fonts allows arbitrary code execution when a malicious font is loaded by one of the vulnerable tools: pdflatex, pdftex, dvips, or luatex.

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
• Tug Tex Live: before 2018-09-21 (fixed in 2018-09-21)

Published 2018-09-23. Last modified 2026-06-17.