| Business Impact: |
Compromise of machines using affected versions of Cisco Call Manager may lead to exposure of confidential information, loss of productivity, and further compromise. Successful exploitation of this vulnerability results in remote code execution and does not require user interaction. |
| CVSS: |
Base Score: |
10.0 |
| |
Access Vector: |
Remote |
| Access Complexity: |
Low |
| Authentication: |
Not Required |
| Confidentiality Impact: |
Complete |
| Integrity Impact: |
Complete |
| Availability Impact: |
Complete |
| Impact Bias: |
Normal |
| Adjusted Temporal Score: |
7.4 |
| |
Exploitability: |
Unproven |
| Remediation Level: |
Official Fix |
| Report Confidence: |
Confirmed |
| Affected Products: |
For a full list of affected versions, see XFDB references below. |
| Technical Description: |
Cisco Call Manager is the software-based call processing component of Cisco’s Voice Over IP (VoIP) infrastructure and is a critical component in any Cisco VoIP deployment. Cisco Call Manager is vulnerable to an off-by-one error, which allows for a one-byte heap-buffer overflow within the CTLProvider.exe component of Call Manager. By sending specially-crafted packets, an attacker is able to trigger the heap overflow, which causes both a denial of service condition and enables the attacker to compromise the Call Manager server. |
| Remediation: |
Patches are available for this issue. See References for details. |
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* 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.
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