Urgent Tomcat security update fixes critical vulnerabilities CVE-2025-31650 (CVSS 8.7) & CVE-2025-31651 (CVSS 9.8). Learn how to patch your SUSE Linux, openSUSE, or enterprise servers to prevent remote exploits. Includes patch instructions for all affected versions.
Why This Tomcat Update Is Essential for Your System Security
A high-risk security update for Apache Tomcat has been released, addressing two critical vulnerabilities that could expose servers to remote attacks. Rated "important" by SUSE, this patch is mandatory for enterprises using:
SUSE Linux Enterprise Server (15 SP3-SP6)
openSUSE Leap 15.6
SUSE Manager Server 4.3
SAP Applications on SUSE
Key Threats Patched:
✔ CVE-2025-31650 (CVSS 8.7) – Invalid priority field exploit
✔ CVE-2025-31651 (CVSS 9.8) – URL parsing flaw allowing RCE
"Unpatched Tomcat servers are prime targets for cyberattacks. Immediate updates are non-negotiable for compliance and security."
Patch Instructions: How to Secure Your Tomcat Installation
Affected Products & Fixes
This update applies to Tomcat 9.0.104 across multiple SUSE distributions, including:
SUSE Linux Enterprise High Performance Computing (SP3-SP5)
SUSE Enterprise Storage 7.1
Web and Scripting Module 15-SP6
Installation Methods:
Recommended: Use
YaST online_updateorzypper patchManual Patch: Run the relevant command for your OS:
# Example: openSUSE Leap 15.6
zypper in -t patch openSUSE-SLE-15.6-2025-1521=1 (Full patch list included in the original advisory.)
Understanding the Vulnerabilities
1. CVE-2025-31650 – Priority Field Exploit (CVSS 8.7)
Risk: Attackers can bypass security checks via malformed priority fields.
Impact: Potential denial-of-service (DoS) or privilege escalation.
2. CVE-2025-31651 – URL Parsing Flaw (CVSS 9.8)
Risk: Poor handling of
;and?in URLs enables remote code execution (RCE).Impact: Full server compromise if exploited.
Why This Matters:
Tomcat powers 50%+ of Java web apps (W3Techs, 2025).
Unpatched servers risk data breaches, compliance failures, and downtime.
Next Steps for System Administrators
✅ Patch immediately using SUSE’s recommended methods.
✅ Verify installation with:
rpm -qa | grep tomcat ✅ Monitor logs for exploitation attempts.
Need enterprise-grade security tools?
SUSE Manager simplifies patch management.
Apache Tomcat Pro Support offers 24/7 vulnerability monitoring.
Frequently Asked Questions (FAQ)
Q: Is this update mandatory for development environments?
A: Yes—attackers often target test servers lacking updates.
Q: How do I check my Tomcat version?
A: Run tomcat version or check /var/log/tomcat.
Q: Are containers affected?
A: Yes—update Docker/Kubernetes images running Tomcat.
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