CVE-2025-15414
📋 TL;DR
This CVE describes a Server-Side Request Forgery (SSRF) vulnerability in go-sonic's Theme Fetching API. Attackers can manipulate the 'uri' parameter in the FetchTheme function to make the server send unauthorized requests to internal or external systems. This affects all users running go-sonic sonic versions up to 1.1.4.
💻 Affected Systems
- go-sonic sonic
⚠️ Risk & Real-World Impact
Worst Case
Attackers could access internal services, exfiltrate sensitive data, or pivot to other systems within the network by making the vulnerable server proxy requests to internal resources.
Likely Case
Information disclosure from internal services, potential credential theft from metadata services, or scanning of internal network segments.
If Mitigated
Limited impact if network segmentation restricts outbound connections and internal services require authentication.
🎯 Exploit Status
Proof-of-concept exploit is publicly available, making exploitation straightforward for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Vendor did not respond to disclosure. Consider workarounds or alternative software.
🔧 Temporary Workarounds
Disable Theme Fetching API
allDisable or restrict access to the vulnerable Theme Fetching API endpoint
# Configuration depends on deployment method. Check go-sonic configuration files for theme fetching settings.
Network Restriction
linuxImplement network controls to restrict outbound connections from the go-sonic server
# Use firewall rules to block outbound HTTP/HTTPS from go-sonic except to trusted sources
iptables -A OUTPUT -p tcp --dport 80 -j DROP
iptables -A OUTPUT -p tcp --dport 443 -j DROP
🧯 If You Can't Patch
- Implement strict input validation and sanitization for the 'uri' parameter
- Deploy Web Application Firewall (WAF) with SSRF protection rules
🔍 How to Verify
Check if Vulnerable:
Check if running go-sonic sonic version 1.1.4 or earlier with Theme Fetching API enabledCheck Version:
Check application version in configuration or via package manager: dpkg -l | grep sonic or rpm -qa | grep sonicVerify Fix Applied:
Verify version is above 1.1.4 (when patch becomes available) or that workarounds are properly implemented📡 Detection & Monitoring
Log Indicators:
- Unusual outbound HTTP requests from go-sonic server
- Requests to internal IP addresses or metadata services
- Failed theme fetch attempts with unusual URIs
Network Indicators:
- Outbound HTTP traffic from go-sonic server to unexpected destinations
- Requests to internal network segments from the application server
SIEM Query:
source="go-sonic" AND (uri="*://169.254.*" OR uri="*://10.*" OR uri="*://192.168.*" OR uri="*://172.16.*")