Allocation of Resources Without Limits or Throttling Affecting pcs package, versions <0:0.11.9-2.el9_6.2


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.54% (41st percentile)

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  • Snyk IDSNYK-RHEL9-PCS-13836122
  • published5 Nov 2025
  • disclosed25 Sept 2025

Introduced: 25 Sep 2025

CVE-2025-59830  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

Upgrade RHEL:9 pcs to version 0:0.11.9-2.el9_6.2 or higher.
This issue was patched in RHSA-2025:19512.

NVD Description

Note: Versions mentioned in the description apply only to the upstream pcs package and not the pcs package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

Rack is a modular Ruby web server interface. Prior to version 2.2.18, Rack::QueryParser enforces its params_limit only for parameters separated by &, while still splitting on both & and ;. As a result, attackers could use ; separators to bypass the parameter count limit and submit more parameters than intended. Applications or middleware that directly invoke Rack::QueryParser with its default configuration (no explicit delimiter) could be exposed to increased CPU and memory consumption. This can be abused as a limited denial-of-service vector. This issue has been patched in version 2.2.18.

CVSS Base Scores

version 3.1