Critical openSUSE 15.3 security update fixes CVE-2025-46727 (DoS) & CVE-2025-32441 (session hijacking) in rmt-server. Learn patch commands for SUSE Linux Enterprise, SAP, HPC, and Cloud deployments to prevent cyberattacks.
Overview of the Security Advisory
The latest openSUSE 15.3 update addresses critical vulnerabilities in rmt-server, including Denial-of-Service (DoS) risks and session management flaws.
This advisory (2025:02429-1) ensures system stability and security for enterprise users, particularly those leveraging SUSE Linux Enterprise Server (SLES), SAP applications, and High-Performance Computing (HPC) environments.
Key Vulnerabilities Fixed
CVE-2025-46727: A critical Unbounded-Parameter DoS vulnerability in Rack::QueryParser that could allow attackers to crash services.
CVE-2025-32441: A bug permitting deleted Rack sessions to be restored during simultaneous requests, leading to potential security breaches.
🔹 Why This Matters: Unpatched systems risk service disruptions, unauthorized access, and compliance failures—making this update essential for IT administrators and DevOps teams.
How to Apply the Patch
Recommended Installation Methods
To secure your systems, apply the update via:
✔ YaST Online Update
✔ Zypper Patch Command
Specific Patch Commands
Depending on your SUSE product, run the appropriate command:
openSUSE Leap 15.3:
zypper in -t patch SUSE-2025-2429=1
Public Cloud Module 15-SP3:
zypper in -t patch SUSE-SLE-Module-Public-Cloud-15-SP3-2025-2429=1
SUSE Linux Enterprise Server 15 SP3 LTSS:
zypper in -t patch SUSE-SLE-Product-SLES-15-SP3-LTSS-2025-2429=1
SUSE Enterprise Storage 7.1:
zypper in -t patch SUSE-Storage-7.1-2025-2429=1
⚠ Pro Tip: Always test patches in a staging environment before deploying to production.
Affected Packages & Systems
The update impacts multiple architectures (aarch64, ppc64le, s390x, x86_64) across:
✅ openSUSE Leap 15.3
✅ SUSE Linux Enterprise High Performance Computing (HPC) LTSS
✅ SUSE Linux Enterprise Server for SAP Applications
✅ SUSE Enterprise Storage 7.1
Updated Package List
| Package | Version |
|---|---|
rmt-server | 2.23-150300.3.54.1 |
rmt-server-pubcloud | 2.23-150300.3.54.1 |
rmt-server-debuginfo | 2.23-150300.3.54.1 |
rmt-server-config | 2.23-150300.3.54.1 |
📌 Full list available in SUSE Security Advisory.
Security Implications & Best Practices
Why Should You Patch Immediately?
Prevent DoS Attacks: CVE-2025-46727 could be exploited to overload server resources.
Secure Session Handling: CVE-2025-32441 may allow session hijacking.
Compliance Requirements: Many industries (finance, healthcare) mandate timely patching.
Additional Security Measures
✔ Monitor logs for unusual Rack session activity.
✔ Restrict API access to trusted IPs.
✔ Schedule regular audits for unpatched systems.
References & Further Reading
🔗 Official CVE Links:
🔗 Bug Reports:
FAQ: openSUSE 15.3 RMT-Server Patch
❓ Is this update mandatory?
✅ Yes, especially for public-facing servers to prevent exploitation.
❓ What if I skip this patch?
⚠ Risk of service outages, data leaks, and compliance violations.
❓ How do I verify the update was applied?
zypper patches | grep SUSE-2025-2429
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