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CVE-2023-32187

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-09-18 · updated 2026-06-17
• Weakness: CWE-770

Description

An Allocation of Resources Without Limits or Throttling vulnerability in SUSE k3s allows attackers with access to K3s servers' apiserver/supervisor port (TCP 6443) cause denial of service. This issue affects k3s: from v1.24.0 before v1.24.17+k3s1, from v1.25.0 before v1.25.13+k3s1, from v1.26.0 before v1.26.8+k3s1, from sev1.27.0 before v1.27.5+k3s1, from v1.28.0 before v1.28.1+k3s1.

Affected products

• SUSE k3s: from 1.24.0 before 1.24.17\+k3s1; from 1.25.0 before 1.25.13\+k3s1; from 1.26.0 before 1.26.8\+k3s1; from 1.27.0 before 1.27.5\+k3s1; from 1.28.0 before 1.28.1\+k3s1 — fixed in 1.24.17\+k3s1, 1.25.13\+k3s1, 1.26.8\+k3s1, 1.27.5\+k3s1, 1.28.1\+k3s1

How to fix

Upgrade to a fixed version: SUSE k3s 1.24.17\+k3s1, 1.25.13\+k3s1, 1.26.8\+k3s1, 1.27.5\+k3s1. Check the vendor advisory for mitigations.

References

• https://bugzilla.suse.com/show_bug.cgi?id=CVE-2023-32187https://
• https://github.com/k3s-io/k3s/security/advisories/GHSA-m4hf-6vgr-75r2
• https://bugzilla.suse.com/show_bug.cgi?id=CVE-2023-32187https://
• https://github.com/k3s-io/k3s/security/advisories/GHSA-m4hf-6vgr-75r2

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