CVE-2023-28313 in Send Customer Voice survey from Dynamics 365
Summary
by MITRE • 04/12/2023
Microsoft Dynamics 365 Customer Voice Cross-Site Scripting Vulnerability
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Analysis
by VulDB Data Team • 04/30/2023
Microsoft Dynamics 365 Customer Voice contains a cross-site scripting vulnerability that allows remote attackers to inject malicious scripts into web applications. This vulnerability stems from insufficient input validation and output encoding mechanisms within the application's web interface. The flaw exists in how the system processes user-supplied data when rendering survey responses and feedback forms, creating an avenue for attackers to execute arbitrary JavaScript code in the context of a victim's browser session.
The technical implementation of this vulnerability aligns with CWE-79, which describes cross-site scripting flaws where untrusted data is directly embedded into web pages without proper sanitization or encoding. Attackers can exploit this weakness by crafting malicious payloads in survey question text, response fields, or form parameters that get rendered without adequate protection. The vulnerability specifically affects the Customer Voice component of Microsoft Dynamics 365, which is used for collecting customer feedback through surveys and polls, making it a critical concern for organizations relying on this platform for customer engagement.
Operational impact of this vulnerability extends beyond simple script execution as it enables attackers to hijack user sessions, steal sensitive data, and potentially escalate privileges within the Dynamics 365 environment. The attack surface includes any user with access to survey creation or response management features, particularly administrators who might be tricked into viewing maliciously crafted survey content. This vulnerability can be leveraged for persistent attacks through session hijacking, data exfiltration, and social engineering campaigns that exploit the trust users place in legitimate survey interfaces. The risk is heightened because Dynamics 365 is widely deployed across enterprise environments, making successful exploitation potentially impactful for numerous organizations.
Mitigation strategies should focus on implementing comprehensive input validation and output encoding mechanisms throughout the Customer Voice application. Organizations should apply Microsoft's security patches promptly and implement additional protective measures such as content security policies that restrict script execution within the application context. Network segmentation and privileged access controls can limit the potential impact if exploitation occurs, while user education about suspicious survey content can help prevent social engineering attacks. The vulnerability also highlights the importance of following ATT&CK framework principles for defending against web application attacks, specifically targeting techniques related to client-side exploitation and credential access through web-based attacks. Regular security assessments of Dynamics 365 components and monitoring for anomalous user behavior patterns should be implemented as part of comprehensive security operations.