CVE-2018-16877

Name: CVE-2018-16877
Creator: NVD / NIST
Published: 2019-04-18T18:29:00.297+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.40%

Last modified Jun 17, 2026

CVE-2018-16877 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A flaw was found in the way pacemaker's client-server authentication was implemented in versions up to and including 2.0.0. A local attacker could use this flaw, and combine it with other IPC weaknesses, to achieve local privilege escalation.. EPSS estimates a 0.40% chance of exploitation in the next 30 days.

Description

A flaw was found in the way pacemaker's client-server authentication was implemented in versions up to and including 2.0.0. A local attacker could use this flaw, and combine it with other IPC weaknesses, to achieve local privilege escalation.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.40%

32.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-287

Affected Software

Vendor	Product	Versions
Clusterlabs	Pacemaker	<= 2.0.0
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	18.10
Canonical	Ubuntu Linux	19.04
Fedoraproject	Fedora	28
Fedoraproject	Fedora	29
Fedoraproject	Fedora	30
Debian	Debian Linux	9.0
Opensuse	Leap	15.0
Opensuse	Leap	42.3
Redhat	Enterprise Linux	8.0
Redhat	Enterprise Linux Eus	8.1
Redhat	Enterprise Linux Eus	8.2
Redhat	Enterprise Linux Eus	8.4
Redhat	Enterprise Linux Eus	8.6
Redhat	Enterprise Linux Server Aus	8.2
Redhat	Enterprise Linux Server Aus	8.4
Redhat	Enterprise Linux Server Aus	8.6
Redhat	Enterprise Linux Server Tus	8.2
Redhat	Enterprise Linux Server Tus	8.4
Redhat	Enterprise Linux Server Tus	8.6

References

http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00012.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00034.htmlMailing List, Third Party Advisory
http://www.securityfocus.com/bid/108042Broken Link
https://access.redhat.com/errata/RHSA-2019:1278Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1279Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16877Issue Tracking, Patch, Third Party Advisory
https://github.com/ClusterLabs/pacemaker/pull/1749Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/01/msg00007.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3GCWFO7GL6MBU6C4BGFO3P6L77DIBBF3/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FY4M4RMIG2POKC6OOFQODGKPRYXHET2F/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HR6QUYGML735EI3HEEHYRDW7EG73BUH2/
https://security.gentoo.org/glsa/202309-09
https://usn.ubuntu.com/3952-1/Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00012.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00034.htmlMailing List, Third Party Advisory
http://www.securityfocus.com/bid/108042Broken Link
https://access.redhat.com/errata/RHSA-2019:1278Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1279Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16877Issue Tracking, Patch, Third Party Advisory
https://github.com/ClusterLabs/pacemaker/pull/1749Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/01/msg00007.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3GCWFO7GL6MBU6C4BGFO3P6L77DIBBF3/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FY4M4RMIG2POKC6OOFQODGKPRYXHET2F/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HR6QUYGML735EI3HEEHYRDW7EG73BUH2/
https://security.gentoo.org/glsa/202309-09
https://usn.ubuntu.com/3952-1/Third Party Advisory

Timeline

Published: Apr 18, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-16877?

How severe is CVE-2018-16877?

CVE-2018-16877 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.

How do I fix CVE-2018-16877?

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-2018-16877?

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

Scan your code now

Source: NVD / NIST