CVE-2007-2832 in CallManager
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the web application firewall in Cisco CallManager before 3.3(5)sr3, 4.1 before 4.1(3)sr5, 4.2 before 4.2(3)sr2, and 4.3 before 4.3(1)sr1 allows remote attackers to inject arbitrary web script or HTML via the pattern parameter to CCMAdmin/serverlist.asp (aka the search-form) and possibly other unspecified vectors.
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Analysis
by VulDB Data Team • 07/13/2024
The vulnerability described in CVE-2007-2832 represents a critical cross-site scripting flaw within Cisco CallManager's web application firewall component. This issue affects multiple versions of the Cisco Unified Communications Manager software, specifically targeting releases before the mentioned service pack and release versions. The vulnerability stems from inadequate input validation mechanisms within the web interface, particularly in the serverlist.asp page which handles search functionality through the pattern parameter. The flaw enables remote attackers to inject malicious scripts into the application's response, potentially compromising user sessions and data integrity.
The technical implementation of this vulnerability resides in the improper sanitization of user-supplied input within the web application firewall's administrative interface. When the pattern parameter is processed through the CCMAdmin/serverlist.asp page, the application fails to properly encode or validate the input before incorporating it into the HTML response. This allows attackers to inject malicious JavaScript code or HTML content that executes in the context of other users' browsers who view the affected page. The vulnerability operates at the application layer and can be exploited through standard HTTP requests without requiring authentication, making it particularly dangerous in environments where administrative interfaces are accessible to unauthenticated users.
The operational impact of this vulnerability extends beyond simple script injection, as it can lead to session hijacking, credential theft, and potential privilege escalation within the affected system. Attackers could leverage this flaw to execute malicious code in the browser context of authenticated users, potentially gaining access to sensitive administrative functions or extracting confidential information from the CallManager environment. The vulnerability affects the web application firewall's ability to properly protect against malicious input, undermining the security controls that should be in place to prevent such attacks. This type of vulnerability directly violates the principle of input validation and output encoding, which are fundamental security practices recommended by the OWASP Top Ten project and aligned with CWE-79 Cross-site Scripting.
Mitigation strategies for this vulnerability require immediate implementation of service packs and security updates from Cisco, specifically targeting the affected versions mentioned in the CVE description. Organizations should ensure that all instances of Cisco CallManager are updated to versions 3.3(5)sr3, 4.1(3)sr5, 4.2(3)sr2, and 4.3(1)sr1 or later, which contain the necessary patches to address the input validation issues. Network segmentation and access controls should be implemented to limit exposure of the administrative interfaces to trusted users only, while also employing web application firewalls to monitor and filter incoming requests. The vulnerability demonstrates the importance of proper input validation and output encoding practices, which aligns with ATT&CK technique T1566.001 for credential access through web application attacks, and represents a classic example of how insufficient sanitization of user input can lead to serious security consequences in enterprise communication systems.