CVE-2007-1196 in Presentation Server
Summary
by MITRE
Unspecified vulnerability in Citrix Presentation Server Client for Windows before 10.0 allows remote web sites to execute arbitrary code via unspecified vectors, related to the implementation of ICA connectivity through proxy servers.
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Analysis
by VulDB Data Team • 06/09/2025
The vulnerability identified as CVE-2007-1196 represents a critical security flaw in Citrix Presentation Server Client for Windows versions prior to 10.0, specifically concerning the implementation of ICA connectivity through proxy servers. This issue falls under the broader category of remote code execution vulnerabilities that can be exploited by malicious web sites to gain unauthorized access to systems running vulnerable client software. The unspecified nature of the exact attack vectors makes this vulnerability particularly concerning as it could potentially encompass multiple exploitation techniques that attackers might leverage.
The technical flaw resides in how the Citrix Presentation Server Client handles ICA (Independent Computing Architecture) connections when traversing proxy servers, creating a potential pathway for malicious code execution. This vulnerability demonstrates a fundamental weakness in the client's security model when establishing connections through intermediary proxy infrastructure, which is commonly used in enterprise environments for network management and security control. The implementation of ICA connectivity through proxy servers introduces additional attack surface that was not adequately secured against malicious web content. According to CWE classification, this vulnerability could be categorized under CWE-79 as a weakness related to Cross-Site Scripting, or more specifically CWE-94 if it involves code injection, though the exact mapping depends on the precise implementation details of the vulnerability.
The operational impact of this vulnerability extends beyond simple remote code execution, as it can enable attackers to establish persistent access to compromised systems within enterprise networks. When users browse the internet and encounter malicious websites while having the vulnerable Citrix client installed, they become potential targets for exploitation. The vulnerability particularly affects organizations that rely on Citrix Presentation Server for remote desktop access, as the compromised client could provide attackers with access to internal network resources that would otherwise be protected by network segmentation. This creates a significant risk for corporate environments where the Citrix client is commonly deployed for remote access solutions, potentially allowing attackers to escalate privileges and move laterally within the network infrastructure.
Organizations should implement immediate mitigations including updating to Citrix Presentation Server Client version 10.0 or later, which contains the necessary security patches to address this vulnerability. Network administrators should also consider implementing additional security controls such as proxy server configuration changes that limit ICA connectivity through untrusted proxy infrastructure, and monitoring for suspicious network traffic patterns related to ICA connections. The vulnerability aligns with several ATT&CK techniques including T1190 for Exploit Public-Facing Application and T1059 for Command and Scripting Interpreter, as attackers could potentially use this vulnerability to establish command execution capabilities on compromised systems. Security teams should also consider deploying network segmentation strategies to limit the potential impact if exploitation occurs, and implement endpoint detection and response solutions that can identify suspicious ICA connection patterns or code execution attempts. The vulnerability demonstrates the importance of keeping client-side software up to date and highlights the risks associated with trusting proxy server configurations in enterprise security architectures.