An authorization flaw was found in Pacemaker before 1.1.16, where it did not properly guard its IPC interface.
An authorization flaw was found in Pacemaker before 1.1.16, where it did not properly guard its IPC interface. An attacker with an unprivileged account on a Pacemaker node could use this flaw to, for example, force the Local Resource Manager daemon to execute a script as root and thereby gain root access on the machine.
- Published
- Sep 10, 2018
- Updated
- Jun 16, 2026
- EPSS
- 0.4% · 31th percentile
- CWE
- CWE-285
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Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 31 / 40 · 7.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.4%
CNA vs NVD score
- NVD
- 7.8
- CNA · redhat
- 8.8
- 1.0 point gap
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| clusterlabs | pacemaker | cpe:2.3:a:clusterlabs:pacemaker |
| redhat | enterprise linux server | cpe:2.3:o:redhat:enterprise_linux_server |
| redhat | enterprise linux server eus | cpe:2.3:o:redhat:enterprise_linux_server_eus |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- clusterlabs pacemakerup to 1.1.16 inclusive
- redhat enterprise linux server6.0
- redhat enterprise linux server7.0
- redhat enterprise linux server eus7.3
- redhat enterprise linux server eus7.4
- redhat enterprise linux server eus7.5
- redhat enterprise linux server eus7.6
Versions reported by the vendor
Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.
ClusterLabs pacemaker
- 1.1.16affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | pacemaker | before 1.1.15-3 | 1.1.15-3 |
| Red Hat:enterprise_linux:6::server | pacemaker | before 0:1.1.14-8.el6_8.2 | 0:1.1.14-8.el6_8.2 |
| Red Hat:enterprise_linux:6::server | pacemaker-cli | before 0:1.1.14-8.el6_8.2 | 0:1.1.14-8.el6_8.2 |
| Red Hat:enterprise_linux:6::server | pacemaker-cluster-libs | before 0:1.1.14-8.el6_8.2 | 0:1.1.14-8.el6_8.2 |
| Red Hat:enterprise_linux:6::server | pacemaker-cts | before 0:1.1.14-8.el6_8.2 | 0:1.1.14-8.el6_8.2 |
| Red Hat:enterprise_linux:6::server | pacemaker-debuginfo | before 0:1.1.14-8.el6_8.2 | 0:1.1.14-8.el6_8.2 |
| Red Hat:enterprise_linux:6::server | pacemaker-doc | before 0:1.1.14-8.el6_8.2 | 0:1.1.14-8.el6_8.2 |
| Red Hat:enterprise_linux:6::server | pacemaker-libs | before 0:1.1.14-8.el6_8.2 | 0:1.1.14-8.el6_8.2 |
| Red Hat:enterprise_linux:6::server | pacemaker-libs-devel | before 0:1.1.14-8.el6_8.2 | 0:1.1.14-8.el6_8.2 |
| Red Hat:enterprise_linux:6::server | pacemaker-remote | before 0:1.1.14-8.el6_8.2 | 0:1.1.14-8.el6_8.2 |
| Red Hat:enterprise_linux:7::server | pacemaker | before 0:1.1.15-11.el7_3.2 | 0:1.1.15-11.el7_3.2 |
| Red Hat:enterprise_linux:7::server | pacemaker-cli | before 0:1.1.15-11.el7_3.2 | 0:1.1.15-11.el7_3.2 |
| Red Hat:enterprise_linux:7::server | pacemaker-cluster-libs | before 0:1.1.15-11.el7_3.2 | 0:1.1.15-11.el7_3.2 |
| Red Hat:enterprise_linux:7::server | pacemaker-cts | before 0:1.1.15-11.el7_3.2 | 0:1.1.15-11.el7_3.2 |
| Red Hat:enterprise_linux:7::server | pacemaker-debuginfo | before 0:1.1.15-11.el7_3.2 | 0:1.1.15-11.el7_3.2 |
| Red Hat:enterprise_linux:7::server | pacemaker-doc | before 0:1.1.15-11.el7_3.2 | 0:1.1.15-11.el7_3.2 |
| Red Hat:enterprise_linux:7::server | pacemaker-libs | before 0:1.1.15-11.el7_3.2 | 0:1.1.15-11.el7_3.2 |
| Red Hat:enterprise_linux:7::server | pacemaker-libs-devel | before 0:1.1.15-11.el7_3.2 | 0:1.1.15-11.el7_3.2 |
| Red Hat:enterprise_linux:7::server | pacemaker-nagios-plugins-metadata | before 0:1.1.15-11.el7_3.2 | 0:1.1.15-11.el7_3.2 |
| Red Hat:enterprise_linux:7::server | pacemaker-remote | before 0:1.1.15-11.el7_3.2 | 0:1.1.15-11.el7_3.2 |
| SUSE:Linux Enterprise High Availability Extension 11 SP4 | pacemaker | before 1.1.12-18.1 | 1.1.12-18.1 |
| SUSE:Linux Enterprise High Availability Extension 12 SP1 | pacemaker | before 1.1.13-20.1 | 1.1.13-20.1 |
| SUSE:Linux Enterprise High Availability Extension 12 SP2 | pacemaker | before 1.1.15-21.1 | 1.1.15-21.1 |
Same product
clusterlabs: all recordsOther highest-scoring records for the same primary product.
- CVE-2019-3885A use-after-free flaw was found in pacemaker up to and including version 2.0.1 which could result in certain sensitive information to be lea31Monitor
- CVE-2018-16877A flaw was found in the way pacemaker's client-server authentication was implemented in versions up to and including 2.0.0.31Monitor
- CVE-2016-7797Pacemaker before 1.1.15, when using pacemaker remote, might allow remote attackers to cause a denial of service (node disconnection) via an 31Monitor
- CVE-2020-25654An ACL bypass flaw was found in pacemaker.29Monitor
- CVE-2011-5271Pacemaker before 1.1.6 configure script creates temporary files insecurely22Monitor
- CVE-2018-16878A flaw was found in pacemaker up to and including version 2.0.1.22Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:pacemaker | 1.1.15-3 · Debian:12 | Package registry (OSV) |
| red hat:pacemaker | 0:1.1.15-11.el7_3.2 · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:pacemaker-cli | 0:1.1.15-11.el7_3.2 · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:pacemaker-cluster-libs | 0:1.1.15-11.el7_3.2 · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:pacemaker-cts | 0:1.1.15-11.el7_3.2 · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:pacemaker-debuginfo | 0:1.1.15-11.el7_3.2 · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:pacemaker-doc | 0:1.1.15-11.el7_3.2 · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:pacemaker-libs | 0:1.1.15-11.el7_3.2 · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:pacemaker-libs-devel | 0:1.1.15-11.el7_3.2 · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:pacemaker-nagios-plugins-metadata | 0:1.1.15-11.el7_3.2 · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:pacemaker-remote | 0:1.1.15-11.el7_3.2 · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| suse:pacemaker | 1.1.15-21.1 · SUSE:Linux Enterprise High Availability Extension 12 SP2 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-285 · Improper AuthorizationCVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Accessing Functionality Not Properly Constrained by ACLsCAPEC-1likelihood: High · High
- Cross Zone ScriptingCAPEC-104likelihood: Medium · High
- Directory IndexingCAPEC-127likelihood: High · Medium
- Subverting Environment Variable ValuesCAPEC-13likelihood: High · Very High
- Using Malicious FilesCAPEC-17likelihood: High · Very High
- Manipulating Opaque Client-based Data TokensCAPEC-39likelihood: High · Medium
- Bypassing ATA Password SecurityCAPEC-402
- Buffer Overflow via Symbolic LinksCAPEC-45likelihood: High · High
ATT&CK techniques
- Data from Local SystemT1005
- Query RegistryT1012
- File and Directory DiscoveryT1083
- Access Token Manipulation:Token Impersonation/TheftT1134.001
- Use Alternate Authentication Material:Web Session CookieT1550.004
- Unsecured Credentials: Credentials in RegistryT1552.002
- Impair Defenses:Impair Command History LoggingT1562.003
- Data Manipulation: Transmitted Data ManipulationT1565.002
- Hijack Execution Flow: Executable Installer File Permissions WeaknessT1574.005
- Hijack Execution Flow:Dynamic Linker HijackingT1574.006
- Hijack Execution Flow:Path Interception by PATH Environment VariableT1574.007
- Hijack Execution Flow: ServicesFile Permissions WeaknessT1574.010
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
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References
- rhn.redhat.com/errata/RHSA-2016-2614.html
- rhn.redhat.com/errata/RHSA-2016-2675.html
- www.openwall.com/lists/oss-security/2016/11/03/5
- www.securityfocus.com/bid/94214
- bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7035
- github.com/ClusterLabs/pacemaker/commit/5d71e65049
- lists.clusterlabs.org/pipermail/users/2016-November/004432.html
- security.gentoo.org/glsa/201710-08
Vendor advisories and official records. Exploit/PoC links are deliberately left out.