CVE-2018-1000878

Name: CVE-2018-1000878
Creator: NVD / NIST
Published: 2018-12-20T17:29:01.16+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 4.45%

Last modified Jun 17, 2026

CVE-2018-1000878 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. libarchive version commit 416694915449219d505531b1096384f3237dd6cc onwards (release v3.1.0 onwards) contains a CWE-416: Use After Free vulnerability in RAR decoder - libarchive/archive_read_support_format_rar.c that can result in Crash/DoS - it is unknown if RCE is possible. This attack appear to be exploitable via the victim must open a specially crafted RAR archive.. EPSS estimates a 4.45% chance of exploitation in the next 30 days.

Description

libarchive version commit 416694915449219d505531b1096384f3237dd6cc onwards (release v3.1.0 onwards) contains a CWE-416: Use After Free vulnerability in RAR decoder - libarchive/archive_read_support_format_rar.c that can result in Crash/DoS - it is unknown if RCE is possible. This attack appear to be exploitable via the victim must open a specially crafted RAR archive.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

4.45%

90.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Libarchive	Libarchive	>= 3.1.0, < 3.4.0
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	18.10
Fedoraproject	Fedora	28
Fedoraproject	Fedora	29
Fedoraproject	Fedora	30
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
http://www.securityfocus.com/bid/106324Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2019:2298Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3698
https://bugs.launchpad.net/ubuntu/+source/libarchive/+bug/1794909Patch, Third Party Advisory
https://github.com/libarchive/libarchive/pull/1105Third Party Advisory
https://github.com/libarchive/libarchive/pull/1105/commits/bfcfe6f04ed20db2504db8a254d1f40a1d84eb28Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/12/msg00011.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/W645KCLWFDBDGFJHG57WOVXGE62QSIJI/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZVXA7PHINVT6DFF6PRLTDTVTXKDLVHNF/
https://usn.ubuntu.com/3859-1/Third Party Advisory
https://www.debian.org/security/2018/dsa-4360Third 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
http://www.securityfocus.com/bid/106324Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2019:2298Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3698
https://bugs.launchpad.net/ubuntu/+source/libarchive/+bug/1794909Patch, Third Party Advisory
https://github.com/libarchive/libarchive/pull/1105Third Party Advisory
https://github.com/libarchive/libarchive/pull/1105/commits/bfcfe6f04ed20db2504db8a254d1f40a1d84eb28Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/12/msg00011.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/W645KCLWFDBDGFJHG57WOVXGE62QSIJI/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZVXA7PHINVT6DFF6PRLTDTVTXKDLVHNF/
https://usn.ubuntu.com/3859-1/Third Party Advisory
https://www.debian.org/security/2018/dsa-4360Third Party Advisory

Timeline

Published: Dec 20, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-1000878?

How severe is CVE-2018-1000878?

CVE-2018-1000878 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 4.45% probability of exploitation in the next 30 days.

How do I fix CVE-2018-1000878?

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-2018-1000878?

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

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Source: NVD / NIST