SUSE has issued an urgent security update for Python-Tornado (CVE-2025-47287) to patch a high-severity DoS vulnerability affecting multipart/form-data parsing. Learn which enterprise Linux systems are impacted and how to apply fixes.
SUSE Releases High-Priority Fix for Denial-of-Service Risk
Severity and Impact
CVSS 8.7 (Critical) – This vulnerability (CVE-2025-47287) allows remote attackers to trigger excessive logging via malformed multipart/form-data requests, leading to denial-of-service (DoS) conditions. Affected systems include:
SUSE Linux Enterprise Server 15 SP3-SP6
SUSE Manager 4.3
SUSE Enterprise Storage 7.1
High-Performance Computing (HPC) deployments
Why This Matters for Enterprises:
Targets web servers using Python-Tornado for form processing.
Exploitable remotely without authentication (CVSS:4.0
AV:N/PR:N).
Patches are urgent for systems handling user uploads or API requests.
Patch Instructions
Recommended Methods
Automated Update: Use
zypper patchor YaST Online Update.Manual Commands:
# Example for SUSE Linux Enterprise 15 SP6: zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP6-2025-1726=1
Affected Packages:
python3-tornado(v4.5.3-150000.3.10.1)Debug symbols for troubleshooting.
Technical Deep Dive
Root Cause
The flaw stems from unbounded logging during malformed multipart/form-data parsing, exhausting disk I/O or storage.
Mitigation Strategies:
Apply patches immediately.
Monitor logs for abnormal
HTTP POSTactivity.Consider rate-limiting form submissions.
Enterprise Implications:
SAP Applications: Critical for
SUSE Linux Enterprise Server for SAP.Cloud Environments: Affects MicroOS/Rancher deployments.
FAQs
Q: Is this vulnerability actively exploited?
A: No public exploits yet, but PoCs are likely due to high CVSS scores.
Q: Are containerized deployments affected?
A: Yes, if using vulnerable Python-Tornado versions.
Q: How to verify patch success?
A: Check package version: rpm -q python3-tornado.
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