Horizon Alert
Summary of the vulnerability and why it matters
A critical vulnerability in Dynamics 365 Customer Voice could allow an attacker to impersonate users and potentially manipulate web content. This type of cross-site scripting vulnerability, which allows unauthorized code execution within a user's browser session, impacts a widely used customer feedback platform. While the direct business impact requires further assessment of your specific deployment, the potential for spoofing warrants attention.
- Attackers can impersonate users in feedback tools.
- Critical flaw enables widespread user impersonation.
- Confirm relevance and exposure for your environment.
Attack Path
How an attacker could exploit the issue
An attacker can compromise a Dynamics 365 Customer Voice instance by sending a specially crafted link to a user. When the user clicks this link, the attacker can then spoof content seen by the user, potentially tricking them into revealing sensitive information or performing unintended actions.
- Entry condition: Network access, no privileges.
- Trigger point: User interaction with a malicious link.
- Resulting risk: Credential theft and user deception.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability could allow an unauthorized attacker to perform spoofing, potentially leading to users being tricked into believing they are interacting with a legitimate Dynamics 365 Customer Voice service. This occurs when input is not properly neutralized during web page generation, enabling cross-site scripting.
- User interface and trust could be compromised.
- Attacker injects malicious scripts via input.
- Users may be misled into harmful actions.
Operational Fix
Recommended remediation, mitigation, and detection steps
Microsoft Dynamics 365 Customer Voice, a cloud-hosted web application designed for broad public interaction, is susceptible to cross-site scripting, allowing unauthorized attackers to potentially spoof users. Initial response should focus on identifying all instances of the affected technology, determining business criticality and network exposure, locating the accountable owner, and then prioritizing remediation actions based on this risk assessment.
- Ownership likely rests with Dynamics 365 administrators or the application owner.
- Verify network reachability and business criticality of deployments.
- Plan coordinated remediation based on identified risk.
