CVE-2018-1000880: Canonical Ubuntu Linux

Medium severity, CVSS 6.5. EPSS: 4.1% chance of exploitation in the next 30 days.

libarchive version commit 9693801580c0cf7c70e862d305270a16b52826a7 onwards (release v3.2.0 onwards) contains a CWE-20: Improper Input Validation vulnerability in WARC parser - libarchive/archive_read_support_format_warc.c, _warc_read() that can result in DoS - quasi-infinite run time and disk usage from tiny file. This attack appear to be exploitable via the victim must open a specially crafted WARC file.

Affected products

• Canonical Ubuntu Linux: version 14.04 only; version 16.04 only; version 18.04 only; version 18.10 only
• Fedoraproject Fedora: version 29 only; version 30 only
• Libarchive Libarchive: from 3.2.0, before 3.4.0 (fixed in 3.4.0)
• Opensuse Leap: version 15.0 only

Published 2018-12-20. Last modified 2026-10-08.