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Vulnerability record · CVE-2018-16877 · published 18 April 2019

CVE-2018-16877: Clusterlabs pacemaker improper authentication vulnerability

Clusterlabs · Pacemaker

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.

7.8 CVSS 3.1 High EPSS 0.38% · top 70.5% CWE-287 · Improper authentication
7.8CVSS 3.1 base score, v2 4.6
0.38%EPSS exploitation probability, 30 days
NoNot in CISA KEV
9Affected product versions listed by NVD
26References
17 Jun 2026Last modified by NVD

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.

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

Affected products

9 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00012.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00034.html Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/108042 Broken Link
https://access.redhat.com/errata/RHSA-2019:1278 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1279 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16877 Issue TrackingPatchThird Party Advisory
https://github.com/ClusterLabs/pacemaker/pull/1749 PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/01/msg00007.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3GCWFO7GL6MBU6C4BGFO3P6
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FY4M4RMIG2POKC6OOFQODGK
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HR6QUYGML735EI3HEEHYRDW
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.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00034.html Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/108042 Broken Link
https://access.redhat.com/errata/RHSA-2019:1278 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1279 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16877 Issue TrackingPatchThird Party Advisory
https://github.com/ClusterLabs/pacemaker/pull/1749 PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/01/msg00007.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3GCWFO7GL6MBU6C4BGFO3P6
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FY4M4RMIG2POKC6OOFQODGK
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HR6QUYGML735EI3HEEHYRDW
https://security.gentoo.org/glsa/202309-09
https://usn.ubuntu.com/3952-1/ Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2018-16877), CISA KEV, FIRST EPSS (scores of 2026-10-02). This page is refreshed as NVD updates the record.