Citrix Presentation Server ICA Client ActiveX buffer overflow
| citrix-wfica-bo (30740) |  High Risk |
Description:
Citrix Presentation Server Client for Windows is vulnerable to a heap-based buffer overflow in the ICA Client Active X control (WFICA.OCX), caused by improper bounds checking by the SendChannelData() method. By creating a malicious Web page that passes a specially-crafted "DataSize", "DataType", and "Data" parameter to the vulnerable method, a remote attacker could overflow a buffer and execute arbitrary code on the system, if the attacker could persuade the victim to visit the page.
*CVSS:
| Base Score: | 8 |
| Access Vector: | Remote |
| Access Complexity: | High |
| Authentication: | Not Required |
| Confidentiality Impact: | Complete |
| Integrity Impact: | Complete |
| Availability Impact: | Complete |
| Temporal Score: | 6.6 |
| Exploitability: | Functional |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Access
Remedy:
Upgrade to the latest version of Citrix Presentation Server Client for Windows (9.230 or later), as listed in CTX111827. See References.
References:
- CTX111827: Vulnerability in Citrix Presentation Server Client for Windows could result in arbitrary code execution.
- FORTCONSULT SECURITY ADVISORY 2006-09-18: Citrix Client for Windows - Wfica.ocx ActiveX vulnerabilities.
- TSRT-06-15: Citrix Presentation Server Client ActiveX Heap Overflow Vulnerability.
- BID-21458: Citrix Presentation Server Client WFICA.OCX ActiveX Component Heap Buffer Overflow Vulnerability
- CVE-2006-6334: Heap-based buffer overflow in the SendChannelData function in wfica.ocx in Citrix Presentation Server Client before 9.230 for Windows allows remote malicious web sites to execute arbitrary code via a DataSize parameter that is less than the length of the Data buffer.
- SA23246: Citrix ICA Client ActiveX Control Buffer Overflow Vulnerability
- SECTRACK ID: 1017343: Citrix Presentation Server Client ActiveX Control Lets Remote Users Execute Arbitrary Code
- US-CERT VU#210969: Citrix ICA Client ActiveX control buffer overflow
- VUPEN/ADV-2006-4865: Citrix Presentation Server Client ActiveX Control Remote Code Execution Vulnerability
Platforms Affected:
- Citrix Presentation Server Client 9.200
Reported:
Dec 04, 2006
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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.