CVE-2019-1000020

Name: CVE-2019-1000020
Creator: NVD / NIST
Published: 2019-02-04T21:29:01.457+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 3.20%

Last modified Jun 17, 2026

CVE-2019-1000020 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 3.20% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS Probability

3.20%

86.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-835

Affected Software

Vendor	Product	Versions
Libarchive	Libarchive	>= 2.8.0, < 3.4.0
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	18.10
Debian	Debian Linux	8.0
Fedoraproject	Fedora	29
Opensuse	Leap	15.0
Redhat	Enterprise Linux Desktop	7.0
Redhat	Enterprise Linux Server	7.0
Redhat	Enterprise Linux Workstation	7.0

References

http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00055.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00012.html
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00015.html
https://access.redhat.com/errata/RHSA-2019:2298Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3698
https://github.com/libarchive/libarchive/pull/1120Third Party Advisory
https://github.com/libarchive/libarchive/pull/1120/commits/8312eaa576014cd9b965012af51bc1f967b12423Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/02/msg00013.htmlThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CBOCC2M6YGPZA6US43YK4INPSJZZHRTG/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZVXA7PHINVT6DFF6PRLTDTVTXKDLVHNF/
https://usn.ubuntu.com/3884-1/Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00055.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00012.html
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00015.html
https://access.redhat.com/errata/RHSA-2019:2298Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3698
https://github.com/libarchive/libarchive/pull/1120Third Party Advisory
https://github.com/libarchive/libarchive/pull/1120/commits/8312eaa576014cd9b965012af51bc1f967b12423Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/02/msg00013.htmlThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CBOCC2M6YGPZA6US43YK4INPSJZZHRTG/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZVXA7PHINVT6DFF6PRLTDTVTXKDLVHNF/
https://usn.ubuntu.com/3884-1/Third Party Advisory

Timeline

Published: Feb 4, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-1000020?

How severe is CVE-2019-1000020?

CVE-2019-1000020 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 3.20% probability of exploitation in the next 30 days.

How do I fix CVE-2019-1000020?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-1000020?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST