HOME VULNERABILITIESCVE-2018-16877

HIGH

CVE-2018-16877

CWE-287Published: April 18, 2019· Updated: Jun 17, 2026

7.8

CVSS v3.1

Official 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.

Technical Analysis

CVE-2018-16877 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

From a weakness classification perspective (CWE-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges Req.Low

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Affected Vendors & Products

Canonical1 product(s)

ubuntu linux

clusterlabs1 product(s)

pacemaker

Debian1 product(s)

debian linux

Fedora1 product(s)

fedora

openSUSE1 product(s)

leap

Red Hat4 product(s)

enterprise linuxenterprise linux eusenterprise linux server ausenterprise linux server tus

Source: NVD CPE · 22 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16877

PATCHhttps://github.com/ClusterLabs/pacemaker/pull/1749

PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16877

PATCHhttps://github.com/ClusterLabs/pacemaker/pull/1749

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2019-05/msg00012.html

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2019-05/msg00034.html

ADVISORYhttps://access.redhat.com/errata/RHSA-2019:1278

ADVISORYhttps://access.redhat.com/errata/RHSA-2019:1279

ADVISORYhttps://lists.debian.org/debian-lts-announce/2021/01/msg00007.html

ADVISORYhttps://usn.ubuntu.com/3952-1/

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2019-05/msg00012.html

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2019-05/msg00034.html

ADVISORYhttps://access.redhat.com/errata/RHSA-2019:1278

ADVISORYhttps://access.redhat.com/errata/RHSA-2019:1279

ADVISORYhttps://lists.debian.org/debian-lts-announce/2021/01/msg00007.html

ADVISORYhttps://usn.ubuntu.com/3952-1/

All References (26)

→

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

Quick Facts

CVE IDCVE-2018-16877

CVSS Score7.8 / 10

SeverityHIGH

WeaknessCWE-287

CISA KEVNo

Affected6 vendor(s)

PublishedApr 18, 2019

Related CVEs (CWE-287)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2018-16877 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

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