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Fencer Intel
medium 4.9

CVE-2015-5189 json

Race condition in pcsd in PCS 0.9.139 and earlier uses a global variable to validate usernames, which allows remote authenticated users to…

published 2015-09-03 11 y ago modified 2026-06-17 4 mo ago also EUVD-2015-5190

cvss
4.9
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 62%
public exploits
0
none known

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.

Patch / fix

  • pcs RHEL 6 0.9.139-9.el6_7.1
  • pcs RHEL 7 0.9.137-13.el7_1.4
  • python-clufter RHEL 7 0.9.137-13.el7_1.4

red hat advisories RHSA-2015:1700

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2015-5189 updated cvss 4.9

pcs: Incorrect authorization when using pcs web UI

  • 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
    fixed: vendor fix RHSA-2015:1700

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.98% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 4.9 AV:N/AC:M/Au:S/C:P/I:P/A:N

Classification

Weakness
  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.