Horizon Alert
Summary of the vulnerability and why it matters
A critical security flaw has been identified in Microsoft Copilot, a command injection vulnerability that could allow an unauthorized attacker to tamper with the system over a network. The main concern at this time is to confirm if our environment utilizes the affected technology.
- Attackers could alter system commands remotely.
- Understand if Copilot on iPhone is in use.
- Confirm relevance and assess potential exposure.
Attack Path
How an attacker could exploit the issue
An attacker could exploit this vulnerability by tricking a user into interacting with a specially crafted input. This could allow them to tamper with the application's functionality and potentially access or modify sensitive information.
- Requires user interaction.
- Triggered by specially crafted input.
- Risk of unauthorized tampering.
Live Threat
Current exploitation, exposure, and threat context
An unauthorized attacker could tamper with Microsoft 365 Copilot over a network. This could impact the service's behavior when an affected user interacts with it.
- Service behavior could be tampered with.
- Via a network connection.
- Unpredictable service outcomes.
Operational Fix
Recommended remediation, mitigation, and detection steps
This vulnerability in Microsoft 365 Copilot on iOS requires user interaction and is not directly exposed to the internet, meaning it is unlikely to be a first target for external attackers. However, internal actors or those who gain initial access could exploit it. The first step is to confirm the presence of the affected application, assess its business criticality, and identify the accountable owner for remediation or mitigation.
- Identify Copilot app owners.
- Verify user interaction, business criticality.
- Plan user-focused mitigation or remediation.
