CVE-2018-16877

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-04-18 · updated 2026-06-17
Weakness: CWE-287

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.

Affected products

Canonical Ubuntu Linux: 16.04, 18.04, 18.10, 19.04
ClusterLabs pacemaker: through 2.0.0
Debian Linux: 9.0
Fedoraproject Fedora: 28, 29, 30
openSUSE Leap: 15.0, 42.3
Red Hat Enterprise Linux: 8.0
RedHat Enterprise Linux Eus: 8.1, 8.2, 8.4, 8.6
RedHat Enterprise Linux Server Aus: 8.2, 8.4, 8.6
RedHat Enterprise Linux Server Tus: 8.2, 8.4, 8.6

References

http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00012.html
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00034.html
http://www.securityfocus.com/bid/108042
https://access.redhat.com/errata/RHSA-2019:1278
https://access.redhat.com/errata/RHSA-2019:1279
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16877
https://github.com/ClusterLabs/pacemaker/pull/1749
https://lists.debian.org/debian-lts-announce/2021/01/msg00007.html
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

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