CVE-2018-1000097: Canonical Ubuntu Linux

High severity, CVSS 7.8. EPSS: 2% chance of exploitation in the next 30 days.

Sharutils sharutils (unshar command) version 4.15.2 contains a Buffer Overflow vulnerability in Affected component on the file unshar.c at line 75, function looks_like_c_code. Failure to perform checking of the buffer containing input line. that can result in Could lead to code execution. This attack appear to be exploitable via Victim have to run unshar command on a specially crafted file..

Affected products

• Canonical Ubuntu Linux: version 14.04 only; version 16.04 only; version 17.10 only
• Debian Debian Linux: version 8.0 only; version 9.0 only
• GNU Sharutils: version 4.15.2 only

Published 2018-03-13. Last modified 2026-06-17.