Critical Security Update for Yelp: CVE-2025-3155 Patch Guide

 

SUSE Linux Enterprise Server 12 SP5 users: Patch CVE-2025-3155 now! This Yelp vulnerability (CVSS 7.4) allows JavaScript execution & file reads via malicious help docs. Learn how to secure your system with our step-by-step guide.

SUSE Linux Enterprise Server Vulnerability Fix – June 2025

🔒 Key Takeaways

• Moderate-risk vulnerability (CVE-2025-3155) allows JavaScript execution & arbitrary file reads via malicious help files.

• Affects SUSE Linux Enterprise Server 12 SP5 and related SAP/LTSS versions.

• CVSS Scores: Up to 7.4 (NVD) – Exploitable via network with user interaction.

• Patch now using zypper or YaST to prevent exploitation.

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📌 Vulnerability Details & Impact

CVE-2025-3155: Critical Security Flaw in Yelp Help Viewer

A newly discovered vulnerability in Yelp (GNOME’s help documentation system) could allow attackers to:
✔ Execute arbitrary JavaScript via crafted help files.
✔ Read sensitive system files through manipulated ghelp: URLs.

Affected Systems:

• SUSE Linux Enterprise Server 12 SP5

• SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security

• SUSE Linux Enterprise Server for SAP Applications 12 SP5

CVSS Breakdown:

Source	CVSS v3.1	CVSS v4.0	Risk Level
NVD	7.4 (High)	–	Network-exploitable
SUSE	6.5 (Medium)	6.9 (Medium)	Requires user interaction

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🛡️ How to Patch CVE-2025-3155

Step-by-Step Update Instructions

1. For SUSE Linux Enterprise Server 12 SP5 LTSS:

   bash

   zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2025-2169=1

2. Alternative Methods:

   • Use YaST Online Update for automated patching.

   • Manually install updated packages (listed below).

Patched Packages

Architecture	Package	Version
x86_64	libyelp0, yelp, yelp-devel	3.20.1-7.3.1
noarch	yelp-lang	3.20.1-7.3.1

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❓ Why This Update Matters

This patch prevents client-side attacks where a user could be tricked into opening a malicious help file, leading to:

• Data leaks (file access via ghelp:).

• Remote code execution (via JavaScript injection).

🔗 Official References:

• SUSE Security Advisory

• Bugzilla Report (bsc#1240688)

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📢 FAQ: Yelp Security Update

Q: Is this vulnerability actively exploited?

A: No known exploits yet, but patch immediately due to moderate risk.

Q: Can I ignore this if I don’t use Yelp?

A: No – If installed, it’s a potential attack vector.

Q: What’s the worst-case scenario?

A: Attackers could steal files or hijack sessions via crafted links.

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🚀 Final Recommendations

• Enterprise users: Deploy patches via SUSE Manager for centralized updates.

• Sysadmins: Audit systems for yelp dependencies.

• End-users: Avoid opening untrusted .help files.