CVE-2019-1000020: Canonical Ubuntu Linux

Medium severity, CVSS 6.5. EPSS: 3.2% chance of exploitation in the next 30 days.

libarchive version commit 5a98dcf8a86364b3c2c469c85b93647dfb139961 onwards (version v2.8.0 onwards) contains a CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in ISO9660 parser, archive_read_support_format_iso9660.c, read_CE()/parse_rockridge() that can result in DoS by infinite loop. This attack appears to be exploitable via the victim opening a specially crafted ISO9660 file.

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
• Fedoraproject Fedora: version 29 only
• Libarchive Libarchive: from 2.8.0, before 3.4.0 (fixed in 3.4.0)
• Opensuse Leap: version 15.0 only
• Red Hat Enterprise Linux Desktop: version 7.0 only
• Red Hat Enterprise Linux Server: version 7.0 only
• Red Hat Enterprise Linux Workstation: version 7.0 only

Published 2019-02-04. Last modified 2026-06-17.