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domingo, 25 de maio de 2025

Critical OpenSSH Security Update for SUSE Linux Enterprise Systems

 

SUSE


Critical OpenSSH update for SUSE Linux Enterprise fixes MOTD failures (Bug #1232533). Learn installation steps, affected packages, and security implications for enterprise systems. Patch now!

Why This Update Matters for Enterprise Security

SUSE has released a moderate-rated security patch (SUSE-RU-2025:01700-1) addressing a critical vulnerability in OpenSSH that could affect system stability. This update specifically resolves failures occurring with very large MOTDs (Message of the Day) – a common enterprise configuration that, when exploited, could lead to system disruptions.

Affected Products

This update applies to multiple SUSE Linux Enterprise distributions, including:

  • SUSE Linux Enterprise Server 12 SP5 (LTSS & Extended Security)

  • SUSE Linux Enterprise High Performance Computing 12 SP5

  • SUSE Linux Enterprise Server for SAP Applications 12 SP5

🔹 Patch Impact: Fixes Bug #1232533 (documented in SUSE Bugzilla)
🔹 Risk Level: Moderate (Recommended for all enterprise deployments)


How to Install the OpenSSH Update

Recommended Update Methods

For seamless deployment, use SUSE’s official update channels:

  1. YaST Online Update (GUI-based)

  2. Zypper Patch (Command-line)

Manual Installation Commands

For SUSE Linux Enterprise Server 12 SP5 LTSS:

bash
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zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-2025-1700=1  

For Extended Security Support:

bash
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zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2025-1700=1  

Updated Package List

The patch includes the following critical components:

  • openssh-7.2p2-81.29.4 (Core SSH security fix)

  • openssh-fips-7.2p2-81.29.4 (FIPS-compliant version)

  • openssh-debuginfo & debugsource (Troubleshooting support)

  • GNOME integration tools (openssh-askpass-gnome)

📌 Note: Debug packages are included for enterprise support teams.


Why Prompt Installation is Crucial

OpenSSH is a mission-critical service for secure remote access in Linux environments. Delaying this update could expose systems to:
 Stability risks (MOTD-related crashes)

✔ Potential compliance gaps (FIPS/enterprise security policies)

For full technical details, review the official bug report:
🔗 SUSE Bug #1232533


FAQ: OpenSSH Security Update

Q: Is this update mandatory for all users?

A: Yes, if running affected SUSE Linux Enterprise versions.

Q: Does this require a reboot?

A: Typically no, but restarting SSH services is recommended.

Q: Are cloud deployments affected?

A: Yes, particularly AWS/Azure instances using SUSE Linux Enterprise.

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