Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 4.x, 5.x before 5.1(3g), 6.x before 6.1(4), 7.0 before 7.0(2a)su1, and 7.1 before 7.1(2a)su1 allows remote attackers to cause a denial of service (file-descriptor exhaustion and SIP outage) via a flood of TCP packets, aka Bug ID CSCsx23689.
| Software | From | Fixed in |
|---|---|---|
| cisco / unified_communications_manager | 7.1 | 7.1\(2a\)su1 |
| cisco / unified_communications_manager | 6.0 | 6.1\(4\) |
| cisco / unified_communications_manager | 7.0 | 7.0\(2a\)su1 |
| cisco / unified_communications_manager | 4.0 | 5.1\(3g\) |