CVE-2025-36137
📋 TL;DR
This vulnerability in IBM Sterling Connect Direct for Unix allows CCD users with existing privileges to escalate their permissions further through maintenance task assignments. It affects users of specific versions who have access to Control Center Director functionality. The issue stems from unnecessary privilege assignments in post-update scripts.
💻 Affected Systems
- IBM Sterling Connect Direct for Unix
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
A privileged CCD user could gain full administrative control over the Sterling Connect Direct system, potentially compromising all managed file transfers and system operations.
Likely Case
Privileged CCD users could perform unauthorized administrative actions beyond their intended scope, potentially disrupting file transfer operations or accessing sensitive data.
If Mitigated
With proper access controls and monitoring, impact would be limited to authorized users performing legitimate administrative tasks within their defined scope.
🎯 Exploit Status
Exploitation requires authenticated access as a privileged CCD user. The vulnerability involves privilege escalation through existing maintenance task permissions.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply fixes as specified in IBM advisory: 6.2.0.9 iFix005, 6.4.0.2 iFix002, or 6.3.0.5 iFix003
Vendor Advisory: https://www.ibm.com/support/pages/node/7249678
Restart Required: Yes
Instructions:
1. Review IBM advisory for specific fix details. 2. Download appropriate fix from IBM Fix Central. 3. Apply fix following IBM installation instructions. 4. Restart Sterling Connect Direct services. 5. Verify fix application.
🔧 Temporary Workarounds
Restrict CCD User Privileges
linuxReview and reduce privileges assigned to CCD users to minimum required for their roles
Review CCD user permissions via Sterling Connect Direct administration interface
Monitor Administrative Actions
allImplement enhanced logging and monitoring of CCD user activities
Configure audit logging for all CCD administrative actions
🧯 If You Can't Patch
- Implement strict least-privilege access controls for all CCD users
- Enable comprehensive audit logging and regularly review CCD user activities
🔍 How to Verify
Check if Vulnerable:
Check Sterling Connect Direct version and compare against affected versions list. Review CCD user permissions for excessive maintenance task assignments.Check Version:
Check version via Sterling Connect Direct administration interface or configuration filesVerify Fix Applied:
Verify installed version is patched (6.2.0.9 iFix005, 6.4.0.2 iFix002, or 6.3.0.5 iFix003). Test CCD user permissions to confirm no excessive maintenance task privileges.📡 Detection & Monitoring
Log Indicators:
- Unusual CCD user performing maintenance tasks
- Privilege escalation attempts in CCD logs
- Unauthorized administrative actions by CCD users
Network Indicators:
- Unusual administrative traffic patterns to CCD interface
SIEM Query:
source="sterling_cd" AND (event_type="privilege_escalation" OR user_role_change OR unauthorized_maintenance_task)