Race condition in pcsd in PCS 0.9.139 and earlier uses a global variable to validate…
Priority LOW 24CWE-362Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- —
- Confidentiality · integrity · availability
- Partial · Partial · None
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
Race condition in pcsd in PCS 0.9.139 and earlier uses a global variable to validate usernames, which allows remote authenticated users to gain privileges by sending a command that is checked for security after another user is authenticated.
Why it matters now
EPSS 0.0098 62nd percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory
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 |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:pacemaker\/corosync_configuration_system_project:pacemaker\/corosync_configuration_system:*:*:*:*:*:*:*:* | up to 0.9.139 | Vulnerable | Pacemaker/corosync Configuration System Project |
- cpe:2.3:a:pacemaker\/corosync_configuration_system_project:pacemaker\/corosync_configuration_system:*:*:*:*:*:*:*:* Versions up to 0.9.139 Vulnerable ·Pacemaker/corosync Configuration System Project
Remediation
Red Hat 1 advisory
- RHSA-2015:1700 Released 2015-09-01 · Red Hat rating Importantpcs security update
- Red Hat Enterprise Linux High Availability (v. 6) pcs-0.9.139-9.el6_7.1
- Red Hat Enterprise Linux Resilient Storage (v. 6) pcs-0.9.139-9.el6_7.1
- Red Hat Enterprise Linux Server High Availability (v. 7) pcs-0.9.137-13.el7_1.4, python-clufter-0.9.137-13.el7_1.4
- Red Hat Enterprise Linux Server Resilient Storage (v. 7) pcs-0.9.137-13.el7_1.4, python-clufter-0.9.137-13.el7_1.4
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux High Availability (v. 6) | Fixed | RHSA-2015:1700 |
| Red Hat Enterprise Linux Resilient Storage (v. 6) | Fixed | RHSA-2015:1700 |
| Red Hat Enterprise Linux Server High Availability (v. 7) | Fixed | RHSA-2015:1700 |
| Red Hat Enterprise Linux Server Resilient Storage (v. 7) | Fixed | RHSA-2015:1700 |
Timeline
- 2026-10-02 Threatist record created from CVE-2015-5189
- 2026-10-03 Alias added: GHSA-9cpv-2w33-4r7c
References
Advisory 1
More Pacemaker/corosync Configuration System Project Pacemaker/corosync Configuration System vulnerabilities
- TI-2015-04358 The pcsd web UI in PCS 0.9.139 and earlier allows remote authenticated users to execute… CVSS 2.0HIGH 8.5
Sources
- CVE-2015-5189 · CVE Program
- CVE-2015-5189 · NVD
- FIRST EPSS
- GHSA-9cpv-2w33-4r7c · GitHub Advisory Database · CC BY 4.0
- CVE-2015-5189 · 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