Improper authorization in ClusterLabs pacemaker
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-285.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| ClusterLabs | pacemaker | 1.1.16 | — | No fix listed | CNA |
- pacemaker VendorClusterLabs Affected 1.1.16 Fixed in — No fix listed CNA
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:clusterlabs:pacemaker:*:*:*:*:*:*:*:* | up to 1.1.16 | Vulnerable | ClusterLabs |
| cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:* | 7.3 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:* | 7.4 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:* | 7.5 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* | 7.6 | Vulnerable | Red Hat |
- cpe:2.3:a:clusterlabs:pacemaker:*:*:*:*:*:*:*:* Versions up to 1.1.16 Vulnerable ·ClusterLabs
- cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:* Versions 7.3 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:* Versions 7.5 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
Remediation
Red Hat 2 advisories
- RHSA-2016:2675 Released 2016-11-08 · Red Hat rating Importantpacemaker security update
- Red Hat Enterprise Linux High Availability (v. 6) pacemaker-1.1.14-8.el6_8.2, pacemaker-cli-1.1.14-8.el6_8.2, pacemaker-cluster-libs-1.1.14-8.el6_8.2 +5
- Red Hat Enterprise Linux Resilient Storage (v. 6) pacemaker-1.1.14-8.el6_8.2, pacemaker-cli-1.1.14-8.el6_8.2, pacemaker-cluster-libs-1.1.14-8.el6_8.2 +5
- RHSA-2016:2614 Released 2016-11-03 · Red Hat rating Importantpacemaker security and bug fix update
- Red Hat Enterprise Linux Server High Availability (v. 7) pacemaker-1.1.15-11.el7_3.2, pacemaker-cli-1.1.15-11.el7_3.2, pacemaker-cluster-libs-1.1.15-11.el7_3.2 +6
- Red Hat Enterprise Linux Server Resilient Storage (v. 7) pacemaker-1.1.15-11.el7_3.2, pacemaker-cli-1.1.15-11.el7_3.2, pacemaker-cluster-libs-1.1.15-11.el7_3.2 +6
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux High Availability (v. 6) | Fixed | RHSA-2016:2675 |
| Red Hat Enterprise Linux Resilient Storage (v. 6) | Fixed | RHSA-2016:2675 |
| Red Hat Enterprise Linux Server High Availability (v. 7) | Fixed | RHSA-2016:2614 |
| Red Hat Enterprise Linux Server Resilient Storage (v. 7) | Fixed | RHSA-2016:2614 |
Timeline
- 2026-10-02 Threatist record created from CVE-2016-7035
- 2026-10-03 Alias added: GHSA-5wmv-gcg2-v47h
References
Advisory 7
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7035
- RHSA-2016:2614
- GLSA-201710-08
- [oss-security] 20161103 CVE-2016-7035 - pacemaker - improper IPC guarding
- RHSA-2016:2675
- [users] 20161103 [SECURITY] CVE-2016-7035 - pacemaker - improper IPC guarding
- https://github.com/ClusterLabs/pacemaker/commit/5d71e65049
More ClusterLabs Pacemaker vulnerabilities
- TI-2016-06549 Pacemaker before 1.1.15, when using pacemaker remote, might allow remote attackers to… CVSS 3.0HIGH 7.5
- 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
- TI-2018-12088 Uncontrolled resource consumption in ClusterLabs pacemaker CVSS 3.1MEDIUM 5.5
Sources
- CVE-2016-7035 · CVE Program
- CVE-2016-7035 · NVD
- FIRST EPSS
- GHSA-5wmv-gcg2-v47h · GitHub Advisory Database · CC BY 4.0
- CVE-2016-7035 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences