CVE-2024-39745
📋 TL;DR
IBM Sterling Connect:Direct Web Services uses weak cryptographic algorithms that could allow attackers to decrypt sensitive data transmitted by the application. This affects versions 6.0 through 6.3 of the software, potentially exposing confidential information.
💻 Affected Systems
- IBM Sterling Connect:Direct Web Services
📦 What is this software?
Sterling Connect Direct Web Services by Ibm
View all CVEs affecting Sterling Connect Direct Web Services →
Sterling Connect Direct Web Services by Ibm
View all CVEs affecting Sterling Connect Direct Web Services →
⚠️ Risk & Real-World Impact
Worst Case
Attackers decrypt highly sensitive business data, financial information, or credentials transmitted via the service, leading to data breaches and compliance violations.
Likely Case
Attackers intercept and decrypt moderately sensitive configuration data or file transfer metadata, potentially enabling further attacks.
If Mitigated
With proper network segmentation and encryption controls, impact is limited to internal network traffic analysis.
🎯 Exploit Status
Exploitation requires network access to intercept traffic and cryptographic analysis capabilities. No authentication bypass needed if traffic can be captured.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply interim fix or upgrade to version 6.3.0.5 or later
Vendor Advisory: https://www.ibm.com/support/pages/node/7166195
Restart Required: Yes
Instructions:
1. Download the interim fix from IBM Fix Central. 2. Stop the Connect:Direct Web Services. 3. Apply the fix according to IBM instructions. 4. Restart the service. 5. Verify cryptographic settings are updated.
🔧 Temporary Workarounds
Network Segmentation
allIsolate Connect:Direct Web Services to trusted network segments to limit attack surface
External Encryption
allImplement VPN or TLS termination proxy with strong cryptography in front of the service
🧯 If You Can't Patch
- Implement network-level encryption (IPsec/VPN) for all traffic to/from the service
- Restrict network access to only required clients and monitor for unusual traffic patterns
🔍 How to Verify
Check if Vulnerable:
Check version via administrative console or configuration files. Versions 6.0-6.3 are vulnerable unless patched to 6.3.0.5 or later.Check Version:
Check version in administrative console or review installation logs/config filesVerify Fix Applied:
Verify version is 6.3.0.5 or later and check cryptographic configuration to ensure weak algorithms are disabled.📡 Detection & Monitoring
Log Indicators:
- Unusual decryption errors
- Failed cryptographic handshakes
- Unexpected connection resets
Network Indicators:
- Unusual traffic patterns to/from Connect:Direct ports
- SSL/TLS version downgrade attempts
SIEM Query:
source="connect_direct" AND (event="crypto_error" OR event="handshake_failure")