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medium 6.5

CVE-2019-1000020 json

libarchive version commit 5a98dcf8a86364b3c2c469c85b93647dfb139961 onwards (version v2.8.0 onwards) contains a CWE-835: Loop with Unreachab…

published 7y ago modified 4mo ago also EUVD-2019-1739

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.2%
EPSS 3.2% chance of exploitation in 30 days, percentile 88%
public exploits
0
none known

Summary

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.

Patch / fix

  • libarchive libarchive 3.4.0
  • libarchive Debian 14, Debian 13, Debian 12 3.3.3-4

debian advisories DEBIAN-CVE-2019-1000020

  • libarchive Ubuntu 14.04 LTS 3.1.2-7ubuntu2.8
  • libarchive Ubuntu 16.04 LTS 3.1.2-11ubuntu0.16.04.6
  • libarchive Ubuntu 18.04 LTS 3.2.2-3.1ubuntu0.3

ubuntu advisories UBUNTU-CVE-2019-1000020

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libarchive RHEL 8 3.3.2-7.el8
  • bsdtar RHEL 8 3.3.2-7.el8
  • libarchive RHEL 7 3.1.2-12.el7
  • bsdtar RHEL 7 3.1.2-12.el7
  • bsdcpio RHEL 7 3.1.2-12.el7

red hat advisories RHSA-2019:3698RHSA-2019:2298

  • libarchive SLE Module for Development Tools 15 SP1, SLE Module for Development Tools 15, SLE Module for Basesystem 15 SP1 +1 more 3.3.2-3.11.1
  • libarchive SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES 12 SP5 +4 more 3.1.2-26.6.1
  • libarchive SLE Module for Development Tools 15, SLE Module for Basesystem 15 3.3.2-3.8.4

suse advisories SUSE-SU-2019:3093-1SUSE-SU-2019:3092-1SUSE-SU-2019:0831-1

  • bsdtar openSUSE Tumbleweed 3.5.1-1.5
  • libarchive openSUSE Leap 15.1 3.3.2-lp151.5.3.1
  • libarchive openSUSE Leap 15.0 3.3.2-lp150.10.1
  • libarchive openSUSE Leap 15.0 3.3.2-lp150.7.1

opensuse advisories openSUSE-SU-2024:10925-1openSUSE-SU-2019:2632-1openSUSE-SU-2019:2615-1openSUSE-SU-2019:1196-1

  • libarchive Arch Linux 3.4.0-1

arch linux advisories AVG-837

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-1000020 updated cvss 6.5

libarchive: Infinite recursion in archive_read_support_format_iso9660.c resulting in denial of service

  • Red Hat Enterprise Linux 6 libarchive
    affected: no fix planned “Will not fix”
  • Red Hat CodeReady Linux Builder (v. 8) bsdcat-debuginfo 3.3.2-7.el8, bsdtar-debuginfo 3.3.2-7.el8, libarchive-devel 3.3.2-7.el8, bsdcpio-debuginfo 3.3.2-7.el8, libarchive-debuginfo 3.3.2-7.el8, libarchive-debugsource 3.3.2-7.el8 Red Hat Enterprise Linux BaseOS (v. 8) bsdtar 3.3.2-7.el8, libarchive 3.3.2-7.el8
    fixed: vendor fix RHSA-2019:3698
  • Red Hat Enterprise Linux Client (v. 7) libarchive 3.1.2-12.el7 Red Hat Enterprise Linux Client Optional (v. 7) bsdtar 3.1.2-12.el7, bsdcpio 3.1.2-12.el7 Red Hat Enterprise Linux ComputeNode (v. 7) libarchive 3.1.2-12.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) bsdtar 3.1.2-12.el7, bsdcpio 3.1.2-12.el7 Red Hat Enterprise Linux Server (v. 7) libarchive 3.1.2-12.el7 Red Hat Enterprise Linux Server Optional (v. 7) bsdtar 3.1.2-12.el7, bsdcpio 3.1.2-12.el7
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 7) libarchive 3.1.2-12.el7 Red Hat Enterprise Linux Workstation Optional (v. 7) bsdtar 3.1.2-12.el7, bsdcpio 3.1.2-12.el7
    fixed: vendor fix RHSA-2019:2298
  • Red Hat Virtualization 4 redhat-virtualization-host-image-update
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.20% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-835 Loop with Unreachable Exit Condition

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.