CVE-2019-1000020

moderate-risk

Published 2019-02-04

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.

Do I need to act?

1.4% chance of exploitation in next 30 days

EPSS score — moderate exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 6.5/10 Medium

NETWORK / LOW complexity

Affected Products (11)

Libarchive

Ubuntu Linux

Debian Linux

Fedora

Leap

Enterprise Linux Desktop

Enterprise Linux Server

Enterprise Linux Workstation

Affected Vendors

Debian Redhat Canonical Fedoraproject Opensuse Libarchive

References (22)

Mailing List http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00055.html

http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00012.html

http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00015.html

Third Party Advisory https://access.redhat.com/errata/RHSA-2019:2298

https://access.redhat.com/errata/RHSA-2019:3698

Third Party Advisory https://github.com/libarchive/libarchive/pull/1120

Patch https://github.com/libarchive/libarchive/pull/1120/commits/8312eaa576014cd9b9650...

Third Party Advisory https://lists.debian.org/debian-lts-announce/2019/02/msg00013.html

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro...

Third Party Advisory https://usn.ubuntu.com/3884-1/

Mailing List http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00055.html

http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00012.html

http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00015.html

Third Party Advisory https://access.redhat.com/errata/RHSA-2019:2298

https://access.redhat.com/errata/RHSA-2019:3698

Third Party Advisory https://github.com/libarchive/libarchive/pull/1120

Patch https://github.com/libarchive/libarchive/pull/1120/commits/8312eaa576014cd9b9650...

Third Party Advisory https://lists.debian.org/debian-lts-announce/2019/02/msg00013.html

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro...

and 2 more references

/ 100

moderate-risk

Severity 24/34 · High

Exploitability 4/34 · Minimal

Exposure 16/34 · Moderate