Path traversal in pcs
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- None · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-552.
Summary
pcs before version 0.9.164 and 0.10 is vulnerable to a privilege escalation via authorized user malicious REST call. The REST interface of the pcsd service did not properly sanitize the file name from the /remote/put_file query. If the /etc/booth directory exists, an authenticated attacker with write permissions could create or overwrite arbitrary files with arbitrary data outside of the /etc/booth directory, in the context of the pcsd process.
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 |
|---|---|---|---|---|---|
| unspecified | pcs | pcs 0.9.164; pcs 0.10 | — | No fix listed | CNA |
- pcs Vendorunspecified Affected pcs 0.9.164; pcs 0.10 Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:clusterlabs:pacemaker_command_line_interface:*:*:*:*:*:*:*:* | up to 0.9.164 | Vulnerable | ClusterLabs |
| cpe:2.3:a:clusterlabs:pacemaker_command_line_interface:0.10:*:*:*:*:*:*:* | 0.10 | Vulnerable | ClusterLabs |
| cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:7.5:*:*:*:*:*:*:* | 7.5 | Vulnerable | Red Hat |
- cpe:2.3:a:clusterlabs:pacemaker_command_line_interface:*:*:*:*:*:*:*:* Versions up to 0.9.164 Vulnerable ·ClusterLabs
- cpe:2.3:a:clusterlabs:pacemaker_command_line_interface:0.10:*:*:*:*:*:*:* Versions 0.10 Vulnerable ·ClusterLabs
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:7.5:*:*:*:*:*:*:* Versions 7.5 Vulnerable ·Red Hat
Remediation
Red Hat 1 advisory
- RHSA-2018:1060 Released 2018-04-10 · Red Hat rating Importantpcs security update
- Red Hat Enterprise Linux Server High Availability (v. 7) pcs-0.9.162-5.el7_5.1, pcs-snmp-0.9.162-5.el7_5.1
- Red Hat Enterprise Linux Server Resilient Storage (v. 7) pcs-0.9.162-5.el7_5.1, pcs-snmp-0.9.162-5.el7_5.1
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux Server High Availability (v. 7) | Fixed | RHSA-2018:1060 |
| Red Hat Enterprise Linux Server Resilient Storage (v. 7) | Fixed | RHSA-2018:1060 |
Not affected: 3 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 8
- Red Hat Storage 3
Timeline
- 2026-10-02 Threatist record created from CVE-2018-1079
- 2026-10-03 Alias added: GHSA-wxjj-jh24-cx5f
References
Sources
- CVE-2018-1079 · CVE Program
- CVE-2018-1079 · NVD
- FIRST EPSS
- GHSA-wxjj-jh24-cx5f · GitHub Advisory Database · CC BY 4.0
- CVE-2018-1079 · 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