SUSE has released a critical security patch (CVE-2025-22872) for Kubernetes-old, addressing a DOM injection flaw in golang.org/x/net/html. Affects SUSE Linux Enterprise 15 SP6/SP7, openSUSE Leap 15.6, and Containers Module. Learn how to patch and protect your clusters now.
SUSE Releases Moderate-Risk Fix for DOM Injection Vulnerability
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SUSE has released a critical security patch (CVE-2025-22872) for Kubernetes-old, addressing a DOM injection flaw in golang.org/x/net/html. Affects SUSE Linux Enterprise 15 SP6/SP7, openSUSE Leap 15.6, and Containers Module. Learn how to patch and protect your clusters now.
Vulnerability Overview
A newly disclosed vulnerability (CVE-2025-22872) in Kubernetes-old poses a moderate risk (CVSS 6.3-6.5) due to improper HTML tag interpretation in golang.org/x/net/html. This could allow:
Incorrect DOM construction leading to potential content manipulation
Cross-scope injection risks in web-facing Kubernetes components
Affected Products:
SUSE Linux Enterprise Server 15 SP6/SP7 (including SAP/Real Time variants)
openSUSE Leap 15.6
Containers Module 15-SP6/SP7
Technical Deep Dive: CVE-2025-22872
Root Cause Analysis
The vulnerability stems from golang’s HTML parser incorrectly placing content during DOM construction (bsc#1241781). Attackers could exploit this to:
Manipulate service mesh configurations
Bypass input sanitization in Kubernetes dashboards
CVSS 4.0 vs 3.1 Scoring
| Metric | CVSS 4.0 (SUSE) | CVSS 3.1 (NVD/SUSE) |
|---|---|---|
| Attack Vector | Network (AV:N) | Network (AV:N) |
| Impact | Low Confidentiality/Integrity (VC:L/VI:L) | Medium Scope (S:C) |
Why This Matters for Enterprises:
Kubernetes’ widespread use in cloud infrastructure makes even moderate-risk patches critical for:
DevOps teams managing multi-cloud deployments
Financial/healthcare organizations with strict compliance requirements
Step-by-Step Patch Guide
For openSUSE Leap 15.6
zypper in -t patch SUSE-2025-1945=1 openSUSE-SLE-15.6-2025-1945=1
For Containers Module
# SP6 zypper in -t patch SUSE-SLE-Module-Containers-15-SP6-2025-1945=1 # SP7 zypper in -t patch SUSE-SLE-Module-Containers-15-SP7-2025-1945=1
Recommended Actions:
Apply patches within 72 hours for production environments
Audit Kubernetes clusters using tools like kube-bench or Aqua Security
Monitor /var/log/kubelet for anomalous DOM-related errors
Enterprise Risk Mitigation
For organizations using SUSE Linux Enterprise for SAP, consider:
Zero-downtime patching via live kernel updates
Immutable infrastructure patterns to reduce attack surface
High-Value Ad Targeting Keywords:
Kubernetes security compliance
Cloud-native vulnerability management
Enterprise container orchestration
FAQ Section
Q: Is this vulnerability exploitable remotely?
A: Yes (AV:N), but requires specific conditions to achieve meaningful impact.
Q: Does this affect non-SUSE Kubernetes distributions?
A: Only if using the vulnerable golang/html package version. Check your vendor’s advisory.
Q: What’s the business impact of delaying this patch?
A: Potential compliance violations (e.g., PCI-DSS, HIPAA) for regulated industries.
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