CVE-2024-27620
📋 TL;DR
This vulnerability allows remote attackers to perform Server-Side Request Forgery (SSRF) in Ladder software versions 0.0.1 through 0.0.21. Attackers can craft malicious API requests to make the server access internal systems and sensitive information. All users running affected Ladder versions are vulnerable.
💻 Affected Systems
- Ladder
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of internal network resources, data exfiltration from internal systems, and potential lateral movement to other servers.
Likely Case
Unauthorized access to internal services, sensitive information disclosure, and potential credential theft from internal APIs.
If Mitigated
Limited impact with proper network segmentation and egress filtering, though some information disclosure may still occur.
🎯 Exploit Status
Packet Storm Security has published exploit details, making exploitation straightforward for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://everywall.github.io/
Restart Required: Yes
Instructions:
1. Monitor vendor GitHub for security updates
2. Upgrade to patched version when available
3. Restart Ladder service after upgrade
🔧 Temporary Workarounds
Network Egress Filtering
linuxRestrict outbound connections from Ladder server to only necessary external services
iptables -A OUTPUT -p tcp --dport 80 -j ACCEPT
iptables -A OUTPUT -p tcp --dport 443 -j ACCEPT
iptables -A OUTPUT -j DROP
API Request Validation
allImplement input validation to reject requests with internal IP addresses or localhost URLs
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Ladder server from sensitive internal systems
- Deploy Web Application Firewall (WAF) with SSRF protection rules
🔍 How to Verify
Check if Vulnerable:
Check Ladder version using the version API endpoint or configuration filesCheck Version:
curl -X GET http://ladder-server:port/api/versionVerify Fix Applied:
Test SSRF attempts against patched version to confirm they are blocked📡 Detection & Monitoring
Log Indicators:
- Unusual outbound connections from Ladder server
- API requests with internal IP addresses or localhost URLs
- Failed SSRF attempts in application logs
Network Indicators:
- Ladder server making unexpected connections to internal services
- Outbound traffic to unusual ports from Ladder server
SIEM Query:
source="ladder.log" AND ("localhost" OR "127.0.0.1" OR "192.168." OR "10." OR "172.16.")