CVE-2018-1000878

high-risk

Published 2018-12-20

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.

Do I need to act?

1.7% 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 8.8/10 High

NETWORK / LOW complexity

Affected Products (14)

Libarchive

Debian Linux

Ubuntu Linux

Fedora

Leap

Enterprise Linux Desktop

Enterprise Linux Server

Enterprise Linux Workstation

Affected Vendors

Debian Redhat Canonical Fedoraproject Opensuse Libarchive

References (30)

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 http://www.securityfocus.com/bid/106324

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

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

Patch https://bugs.launchpad.net/ubuntu/+source/libarchive/+bug/1794909

Third Party Advisory https://github.com/libarchive/libarchive/pull/1105

Patch https://github.com/libarchive/libarchive/pull/1105/commits/bfcfe6f04ed20db2504db...

Third Party Advisory https://lists.debian.org/debian-lts-announce/2018/12/msg00011.html

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

Third Party Advisory https://usn.ubuntu.com/3859-1/

Third Party Advisory https://www.debian.org/security/2018/dsa-4360

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 http://www.securityfocus.com/bid/106324

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

and 10 more references

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high-risk

Severity 30/34 · Critical

Exploitability 4/34 · Minimal

Exposure 18/34 · Moderate