CVE-2025-58441
📋 TL;DR
Knowage versions before 8.1.37 have a blind server-side request forgery vulnerability that allows attackers to send requests to arbitrary internal hosts and paths. While attackers cannot read responses, they can use this to scan internal networks. All Knowage deployments using vulnerable versions are affected.
💻 Affected Systems
- Knowage
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attacker maps internal network infrastructure, identifies other vulnerable services, and uses this reconnaissance for lateral movement or combined attacks.
Likely Case
Internal network scanning to discover other systems, potentially identifying additional attack surfaces.
If Mitigated
Limited to port scanning of internal systems with no data exfiltration.
🎯 Exploit Status
Blind SSRF typically requires some authentication level but is straightforward to exploit once access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 8.1.37
Vendor Advisory: https://github.com/KnowageLabs/Knowage-Server/security/advisories/GHSA-m6x8-wh9v-6jxp
Restart Required: Yes
Instructions:
1. Backup current Knowage installation and data. 2. Download Knowage 8.1.37 or newer. 3. Follow official upgrade documentation. 4. Restart Knowage services. 5. Verify functionality.
🔧 Temporary Workarounds
Network Segmentation
allRestrict Knowage server's outbound network access to only required services.
Web Application Firewall Rules
allBlock SSRF patterns in WAF by detecting outbound requests to internal IP ranges.
🧯 If You Can't Patch
- Implement strict network egress filtering to limit Knowage server's outbound connections.
- Deploy web application firewall with SSRF detection rules.
🔍 How to Verify
Check if Vulnerable:
Check Knowage version in admin interface or configuration files.Check Version:
Check web interface or examine knowage.version file in installation directory.Verify Fix Applied:
Confirm version is 8.1.37 or newer and test SSRF functionality is blocked.📡 Detection & Monitoring
Log Indicators:
- Unusual outbound HTTP requests from Knowage server
- Requests to internal IP addresses or unusual domains
Network Indicators:
- Knowage server making unexpected outbound HTTP requests
- Port scanning patterns originating from Knowage server
SIEM Query:
source="knowage" AND (dest_ip=10.0.0.0/8 OR dest_ip=172.16.0.0/12 OR dest_ip=192.168.0.0/16)