CVE-2016-9148 in Service Desk Manager
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in CA Service Desk Manager (formerly CA Service Desk) 12.9 and 14.1 allows remote attackers to inject arbitrary web script or HTML via the QBE.EQ.REF_NUM parameter.
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Analysis
by VulDB Data Team • 10/03/2022
The CVE-2016-9148 vulnerability represents a critical cross-site scripting flaw in CA Service Desk Manager versions 12.9 and 14.1, exposing organizations to significant web application security risks. This vulnerability specifically affects the QBE.EQ.REF_NUM parameter within the application's query builder functionality, creating an attack vector that allows remote adversaries to inject malicious web scripts or HTML content into the application's response. The flaw exists due to inadequate input validation and output encoding mechanisms that fail to properly sanitize user-supplied data before it is rendered in the web interface, making it a classic example of an XSS vulnerability that falls under CWE-79 - Improper Neutralization of Input During Web Page Generation. The vulnerability impacts the application's web-based interface where users interact with query builder features, potentially allowing attackers to execute malicious code in the context of authenticated users' browsers.
The technical exploitation of this vulnerability requires minimal prerequisites, as attackers only need to craft a malicious payload containing script code and submit it through the vulnerable QBE.EQ.REF_NUM parameter. The attack surface is particularly concerning because it operates within the context of a legitimate service desk application that likely handles sensitive business data and user credentials. When a victim interacts with the maliciously crafted query result, the injected script executes in their browser, potentially leading to session hijacking, credential theft, or redirection to malicious sites. This vulnerability directly maps to ATT&CK technique T1566.001 - Phishing: Spearphishing Attachment, as attackers can craft malicious query parameters that appear legitimate to end users. The flaw demonstrates poor input validation practices where the application fails to properly escape or encode special characters in user-supplied data, allowing script tags and other malicious content to persist in the application's response.
The operational impact of CVE-2016-9148 extends beyond simple script execution, as it can enable attackers to perform various malicious activities within the compromised user's session context. Attackers could leverage this vulnerability to steal session cookies, modify service desk records, access sensitive data, or even escalate privileges within the application environment. The vulnerability's persistence in both versions 12.9 and 14.1 indicates a widespread issue that affects organizations using these specific service desk manager releases, potentially exposing critical business processes and service management workflows. Organizations utilizing CA Service Desk Manager in production environments face significant risk of unauthorized access and data compromise, particularly in scenarios where the application handles confidential customer information or business-critical service requests. The vulnerability's remote nature eliminates the need for physical access or local network presence, making it particularly dangerous for organizations with remote workers or cloud-based deployments. Security teams must consider the potential for lateral movement within network environments if attackers can establish persistent access through this vector, as the service desk application often serves as a central point of access for various IT service management functions.
Mitigation strategies for CVE-2016-9148 should focus on immediate patching of affected CA Service Desk Manager versions, with organizations prioritizing updates to the latest available releases that contain proper input validation and output encoding fixes. The implementation of proper input sanitization mechanisms, including strict validation of the QBE.EQ.REF_NUM parameter and comprehensive output encoding, should be enforced at the application level to prevent script injection. Organizations should also implement web application firewalls with XSS detection capabilities, deploy content security policies to limit script execution, and conduct thorough security testing of all input parameters within the application. Additionally, regular security awareness training for administrators and users can help identify potential phishing attempts that might exploit this vulnerability, while network segmentation and monitoring can help detect anomalous query behavior that may indicate exploitation attempts. The vulnerability highlights the importance of maintaining up-to-date security patches and proper application hardening practices, as this flaw could have been prevented through standard security development lifecycle practices that include proper input validation and output encoding mechanisms.