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TI-2018-12088 Aliases CVE-2018-16878GHSA-gw2c-9hqf-w753

Uncontrolled resource consumption in ClusterLabs pacemaker

Priority LOW 25CWE-400Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 5 fixed, 2 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-400.

Summary

A flaw was found in pacemaker up to and including version 2.0.1. An insufficient verification inflicted preference of uncontrolled processes can lead to DoS

Why it matters now

EPSS 0.00411 35th percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 5 fixed, 2 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
ClusterLabspacemakeraffects up to and including version 2.0.1—No fix listedCNA
  • pacemaker VendorClusterLabs Affected affects up to and including version 2.0.1 Fixed in — No fix listed CNA

CPE configurations NVD · 22

CPEVersionsRoleVendor
cpe:2.3:a:clusterlabs:pacemaker:*:*:*:*:*:*:*:*up to 2.0.1VulnerableClusterLabs
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*16.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*18.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*18.10VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*19.04VulnerableCanonical
cpe:2.3:o:fedoraproject:fedora:28:*:*:*:*:*:*:*28VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*29VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*30VulnerableFedoraproject
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*15.0VulnerableopenSUSE
  • cpe:2.3:a:clusterlabs:pacemaker:*:*:*:*:*:*:*:* Versions up to 2.0.1 Vulnerable ·ClusterLabs
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* Versions 18.10 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:* Versions 19.04 Vulnerable ·Canonical
  • cpe:2.3:o:fedoraproject:fedora:28:*:*:*:*:*:*:* Versions 28 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:* Versions 29 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* Versions 30 Vulnerable ·Fedoraproject
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:* Versions 15.0 Vulnerable ·openSUSE
Show 12 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*42.3VulnerableopenSUSE
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*8.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_aus:8.2:*:*:*:*:*:*:*8.2VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_aus:8.4:*:*:*:*:*:*:*8.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_aus:8.6:*:*:*:*:*:*:*8.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_eus:8.1:*:*:*:*:*:*:*8.1VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:*8.2VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*8.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:*8.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_tus:8.2:*:*:*:*:*:*:*8.2VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_tus:8.4:*:*:*:*:*:*:*8.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_tus:8.6:*:*:*:*:*:*:*8.6VulnerableRed Hat
  • cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:* Versions 42.3 Vulnerable ·openSUSE
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_aus:8.2:*:*:*:*:*:*:* Versions 8.2 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_aus:8.4:*:*:*:*:*:*:* Versions 8.4 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_aus:8.6:*:*:*:*:*:*:* Versions 8.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_eus:8.1:*:*:*:*:*:*:* Versions 8.1 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:* Versions 8.2 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:* Versions 8.4 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:* Versions 8.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_tus:8.2:*:*:*:*:*:*:* Versions 8.2 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_tus:8.4:*:*:*:*:*:*:* Versions 8.4 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_tus:8.6:*:*:*:*:*:*:* Versions 8.6 Vulnerable ·Red Hat

Remediation

Red Hat 2 advisories

  • RHSA-2019:1278 Released 2019-05-27 · Red Hat rating Important
    pacemaker security update
    • Red Hat Enterprise Linux Server High Availability (v. 7) pacemaker-1.1.19-8.el7_6.5, pacemaker-cli-1.1.19-8.el7_6.5, pacemaker-cluster-libs-1.1.19-8.el7_6.5 +6
    • Red Hat Enterprise Linux Server Resilient Storage (v. 7) pacemaker-1.1.19-8.el7_6.5, pacemaker-cli-1.1.19-8.el7_6.5, pacemaker-cluster-libs-1.1.19-8.el7_6.5 +6
  • RHSA-2019:1279 Released 2019-05-27 · Red Hat rating Important
    pacemaker security and bug fix update
    • Red Hat Enterprise Linux AppStream (v. 8) pacemaker-2.0.1-4.el8_0.3, pacemaker-cluster-libs-2.0.1-4.el8_0.3, pacemaker-libs-2.0.1-4.el8_0.3 +1
    • Red Hat Enterprise Linux High Availability (v. 8) pacemaker-2.0.1-4.el8_0.3, pacemaker-cli-2.0.1-4.el8_0.3, pacemaker-cts-2.0.1-4.el8_0.3 +4
    • Red Hat Enterprise Linux Resilient Storage (v. 8) pacemaker-2.0.1-4.el8_0.3, pacemaker-cli-2.0.1-4.el8_0.3, pacemaker-cts-2.0.1-4.el8_0.3 +4

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    ClusterLabs pacemaker — openSUSE-SU-2019:1400

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2019-02895 Use after free in ClusterLabs pacemakerPriority LOW 37
    • TI-2018-12087 Improper authentication in ClusterLabs pacemakerPriority LOW 34
    Show all 3 records → Advisory →
  • Advisory ·

    ClusterLabs pacemaker — RHSA-2019:1278

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2019-02895 Use after free in ClusterLabs pacemakerPriority LOW 37
    • TI-2018-12087 Improper authentication in ClusterLabs pacemakerPriority LOW 34
    Show all 3 records → Advisory →
Show 7 more groups
  • Advisory ·

    ClusterLabs pacemaker — RHSA-2019:1279

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2019-02895 Use after free in ClusterLabs pacemakerPriority LOW 37
    • TI-2018-12087 Improper authentication in ClusterLabs pacemakerPriority LOW 34
    Show all 3 records → Advisory →
  • Advisory ·

    ClusterLabs pacemaker — FEDORA-2019-e71f6f36ac

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2019-02895 Use after free in ClusterLabs pacemakerPriority LOW 37
    • TI-2018-12087 Improper authentication in ClusterLabs pacemakerPriority LOW 34
    Show all 3 records → Advisory →
  • Advisory ·

    ClusterLabs pacemaker — FEDORA-2019-b502250ba4

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2019-02895 Use after free in ClusterLabs pacemakerPriority LOW 37
    • TI-2018-12087 Improper authentication in ClusterLabs pacemakerPriority LOW 34
    Show all 3 records → Advisory →
  • Advisory ·

    ClusterLabs pacemaker — FEDORA-2019-e4c8de3fb7

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2019-02895 Use after free in ClusterLabs pacemakerPriority LOW 37
    • TI-2018-12087 Improper authentication in ClusterLabs pacemakerPriority LOW 34
    Show all 3 records → Advisory →
  • Advisory ·

    ClusterLabs pacemaker — GLSA-202309-09

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2019-02895 Use after free in ClusterLabs pacemakerPriority LOW 37
    • TI-2018-12087 Improper authentication in ClusterLabs pacemakerPriority LOW 34
    Show all 3 records → Advisory →
  • Advisory ·

    ClusterLabs pacemaker — USN-3952-1

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2019-02895 Use after free in ClusterLabs pacemakerPriority LOW 37
    • TI-2018-12087 Improper authentication in ClusterLabs pacemakerPriority LOW 34
    Show all 3 records → Advisory →
  • Advisory ·

    ClusterLabs pacemaker — openSUSE-SU-2019:1342

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2018-12087 Improper authentication in ClusterLabs pacemakerPriority LOW 34
    Show all 2 records → Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Will not fix
Red Hat Storage 3AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2019:1279
Red Hat Enterprise Linux High Availability (v. 8)Fixed RHSA-2019:1279
Red Hat Enterprise Linux Resilient Storage (v. 8)Fixed RHSA-2019:1279
Red Hat Enterprise Linux Server High Availability (v. 7)Fixed RHSA-2019:1278
Red Hat Enterprise Linux Server Resilient Storage (v. 7)Fixed RHSA-2019:1278

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-16878
  2. 2026-10-03 Alias added: GHSA-gw2c-9hqf-w753

References

Patch 2

Advisory 10

  • TI-2016-06549 Pacemaker before 1.1.15, when using pacemaker remote, might allow remote attackers to… CVSS 3.0HIGH 7.5
  • TI-2016-06046 Improper authorization in ClusterLabs pacemaker CVSS 3.0HIGH 8.8
  • TI-2015-01677 Pacemaker before 1.1.13 does not properly evaluate added nodes, which allows remote… CVSS 2.0HIGH 7.5
  • TI-2019-02895 Use after free in ClusterLabs pacemaker CVSS 3.0HIGH 7.5
  • TI-2020-15671 Improper access control in pacemaker CVSS 3.1HIGH 7.2
  • TI-2018-12087 Improper authentication in ClusterLabs pacemaker CVSS 3.1HIGH 7.8
See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences