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Last updated: 12/22/2014 10:40:40 AM

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National Cyber Awareness System

Vulnerability Summary for CVE-2007-5537

Original release date: 10/17/2007
Last revised: 03/07/2011


Cisco Unified Communications Manager (CUCM, formerly CallManager) 5.1 before 5.1(2), and Unified CallManager 5.0, allow remote attackers to cause a denial of service (kernel panic) via a flood of SIP INVITE messages to UDP port 5060, which triggers resource exhaustion, aka CSCsi75822.


CVSS Severity (version 2.0):
CVSS v2 Base Score: 7.8 (HIGH) (AV:N/AC:L/Au:N/C:N/I:N/A:C) (legend)
Impact Subscore: 6.9
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows disruption of service

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External Source: XF
Name: cucm-sip-invite-dos(37246)
External Source: OSVDB
Name: 37941
External Source: VUPEN
Name: ADV-2007-3532
External Source: CISCO
Name: 20071017 Cisco Unified Communications Manager Denial of Service Vulnerabilities
External Source: SECTRACK
Name: 1018828
External Source: SECUNIA
Name: 27296
External Source: BID
Name: 26105

Vulnerable software and versions

+ Configuration 1
+ OR
* cpe:/a:cisco:unified_callmanager:5.0
* cpe:/a:cisco:unified_communications_manager:5.1%282%29 and previous versions

* Denotes Vulnerable Software
Changes related to vulnerability configurations

Technical Details

Vulnerability Type (View All)
  • Resource Management Errors (CWE-399)