Cisco Unified Communications Manager and Cisco Unified CallManager TFTP filename buffer overflow
| cucm-tftp-filename-bo (37247) |  High Risk |
Description:
Cisco Unified Communications Manager and Cisco Unified CallManager are vulnerable to a buffer overflow, caused by improper bounds checking by the Centralized TFTP File Locator Service. By sending a specially-crafted filename to UDP port 69 or TCP port 6970, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause a denial of service.
*CVSS:
| Base Score: | 10 |
| Access Vector: | Network |
| Access Complexity: | Low |
| Authentication: | None |
| Confidentiality Impact: | Complete |
| Integrity Impact: | Complete |
| Availability Impact: | Complete |
| Temporal Score: | 7.4 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Access
Remedy:
Refer to cisco-sa-20071017-cucm for patch, upgrade or suggested workaround information. See References.
References:
- cisco-sa-20071017-cucm: Cisco Unified Communications Manager Denial of Service Vulnerabilities.
- BID-26105: Cisco Unified Communications Manager Remote Denial of Service and Buffer Overflow Vulnerabilities
- CVE-2007-5538: Buffer overflow in the Centralized TFTP File Locator Service in Cisco Unified Communications Manager (CUCM, formerly CallManager) 5.1 before 5.1(3), and Unified CallManager 5.0, allows remote attackers to execute arbitrary code or cause a denial of service via unspecified vectors involving the processing of filenames, aka CSCsh47712.
- SA27296: Cisco Unified Communications Manager Two Vulnerabilities
- SECTRACK ID: 1018828: Cisco Unified Communications Manager SIP INVITE Processing Lets Remote Users Deny Service and TFTP Buffer Overflow Lets Remote Users Execute Arbitrary Code
- VUPEN/ADV-2007-3532: Cisco Unified Communications Manager Code Execution and DoS Issues
Platforms Affected:
- Cisco Unified CallManager 5.0
- Cisco Unified Communications Manager 5.1
- Cisco Unified Communications Manager 5.1(1)
- Cisco Unified Communications Manager 5.1(2)
Reported:
Oct 17, 2007
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.
For corrections or additions please email xforce@iss.net
* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.