CVE-2010-4515 in Web Interface
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Citrix Web Interface 5.0, 5.1, and 5.3 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors, a different vulnerability than CVE-2007-6477 and CVE-2009-2454.
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Analysis
by VulDB Data Team • 03/18/2021
The CVE-2010-4515 vulnerability represents a critical cross-site scripting flaw affecting Citrix Web Interface versions 5.0, 5.1, and 5.3. This vulnerability falls under the broader category of web application security weaknesses that have been systematically catalogued by the Common Weakness Enumeration project, specifically aligning with CWE-79 which describes "Cross-site Scripting". The vulnerability enables remote attackers to inject malicious web scripts or HTML content into the target system, potentially compromising user sessions and data integrity. Unlike previous vulnerabilities such as CVE-2007-6477 and CVE-2009-2454, this particular flaw operates through distinct attack vectors that were not previously documented, making it a novel threat to organizations relying on Citrix Web Interface for remote access solutions. The vulnerability's impact extends beyond simple script injection as it represents a fundamental breakdown in input validation and output encoding mechanisms within the Citrix Web Interface framework.
The technical implementation of this XSS vulnerability stems from inadequate sanitization of user-supplied input within the web interface components. Attackers can exploit this weakness by crafting malicious payloads that are then executed in the context of other users' browsers who visit affected pages. The unspecified vectors mentioned in the CVE description suggest that the vulnerability may manifest through multiple entry points including form fields, URL parameters, or cookie values within the Citrix Web Interface environment. This broad attack surface increases the likelihood of successful exploitation and makes defensive measures more complex. The vulnerability's presence in multiple versions of the Citrix Web Interface indicates a systemic issue within the application's architecture rather than a localized coding error, suggesting that organizations running any of these versions face identical security risks.
From an operational standpoint, the exploitation of CVE-2010-4515 can result in severe consequences for affected organizations. Attackers can leverage this vulnerability to hijack user sessions, steal sensitive authentication credentials, and potentially gain unauthorized access to corporate networks through the Citrix infrastructure. The attack chain typically involves initial compromise through user interaction with malicious links or content, followed by session hijacking and privilege escalation. Organizations utilizing Citrix Web Interface for remote desktop services and application access face particular risk as this vulnerability could enable attackers to bypass traditional network security controls and directly access internal resources. The vulnerability also aligns with several tactics identified in the MITRE ATT&CK framework, specifically covering techniques related to credential access and privilege escalation through web-based attacks.
Mitigation strategies for CVE-2010-4515 should encompass both immediate patching and defensive measures. Organizations must prioritize updating their Citrix Web Interface installations to versions that contain the necessary security fixes, as Citrix would have released patches addressing this specific vulnerability. Additionally, implementing robust input validation and output encoding mechanisms can provide defense-in-depth against similar vulnerabilities. Network segmentation and web application firewalls can help detect and block malicious payloads before they reach vulnerable components. Security monitoring should include detection of suspicious user behavior patterns and anomalous access attempts that might indicate exploitation attempts. Regular security assessments and penetration testing of Citrix environments can help identify additional vulnerabilities that may exist beyond the scope of this specific CVE. Organizations should also consider implementing multi-factor authentication and least privilege access controls to minimize the potential impact of successful exploitation attempts.