Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 4.x before 4.3(2)SR2, 6.x before 6.1(5), 7.x before 7.1(3a)su1, and 8.x before 8.0(1) allows remote attackers to cause a denial of service (process failure) via a malformed SCCP StationCapabilitiesRes message with an invalid MaxCap field, aka Bug ID CSCtc38985.
Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 6.x before 6.1(5), 7.x before 7.1(3a)su1, and 8.x before 8.0(1) allows remote attackers to cause a denial of service (process failure) via a malformed SCCP (1) RegAvailableLines or (2) FwdStatReq message with an invalid Line number, aka Bug ID CSCtc47823.
Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 6.x before 6.1(5), 7.x before 7.1(3b)SU2, and 8.x before 8.0(1) allows remote attackers to cause a denial of service (process failure) via a malformed SIP REG message, related to an overflow of the Telephone-URL field, aka Bug ID CSCtc62362.
The CTI Manager service in Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 4.x before 4.3(2)sr1a, 6.x before 6.1(3), 7.0x before 7.0(2), 7.1x before 7.1(2), and 8.x before 8.0(1) allows remote attackers to cause a denial of service (service failure) via a malformed message, aka Bug ID CSCsu31800.
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.
Cisco Unified Communications Manager (aka CUCM, formerly CallManager) before 6.1(1) allows remote attackers to cause a denial of service (voice-services outage) via a malformed header in a SIP message, aka Bug ID CSCsi46466.
The IP Phone Personal Address Book (PAB) Synchronizer feature in Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 4.1, 4.2 before 4.2(3)SR4b, 4.3 before 4.3(2)SR1b, 5.x before 5.1(3e), 6.x before 6.1(3), and 7.0 before 7.0(2) sends privileged directory-service account credentials to the client in cleartext, which allows remote attackers to modify the CUCM configuration and perform other privileged actions by intercepting these credentials, and then using them in requests unrelated to the intended synchronization task, as demonstrated by (1) DC Directory account credentials in CUCM 4.x and (2) TabSyncSysUser account credentials in CUCM 5.x through 7.x.
The Computer Telephony Integration (CTI) Manager service in Cisco Unified Communications Manager (CUCM) 5.x before 5.1(3c) and 6.x before 6.1(2) allows remote attackers to cause a denial of service (TSP crash) via malformed network traffic to TCP port 2748.
The Real-Time Information Server (RIS) Data Collector service in Cisco Unified Communications Manager (CUCM) before 4.2(3)SR4, and 4.3 before 4.3(2)SR1, allows remote attackers to bypass authentication, and obtain cluster configuration information and statistics, via a direct TCP connection to the service port, aka Bug ID CSCsq35151.
Memory leak in the Certificate Trust List (CTL) Provider service in Cisco Unified Communications Manager (CUCM) 5.x before 5.1(3) and 6.x before 6.1(1) allows remote attackers to cause a denial of service (memory consumption and service interruption) via a series of malformed TCP packets, aka Bug ID CSCsi98433.