CVE-2024-23746 is a critical vulnerability affecting Miro Desktop version 0.8.18 on macOS. The flaw allows local attackers to perform Electron code injection through a sophisticated exploitation chain. The attack involves bypassing macOS's kTCCServiceSystemPolicyAppBundles security requirement by manipulating the application bundle structure. Specifically, the attacker performs a series of file operations: copying files, renaming the app bundle's Contents directory, modifying the asar archive (which packages Electron app resources), and then renaming the Contents directory back. This sequence circumvents system policy protections designed to restrict unauthorized code execution within app bundles. The vulnerability is classified under CWE-94 (Improper Control of Generation of Code), indicating that untrusted input can lead to arbitrary code execution. The CVSS v3.1 score is 9.8 (critical), reflecting the vulnerability's high impact on confidentiality, integrity, and availability without requiring privileges or user interaction. Although no public exploits are currently known, the ease of exploitation and the potential for full system compromise make this a severe threat. The vulnerability is specific to macOS environments running the affected Miro Desktop version and leverages Electron's architecture, which is widely used in cross-platform desktop applications.

For European organizations, this vulnerability poses a significant risk, especially those relying on Miro Desktop for collaboration and project management. Successful exploitation could lead to arbitrary code execution with the privileges of the logged-in user, potentially allowing attackers to install malware, exfiltrate sensitive data, or disrupt operations. Given the critical CVSS score and the lack of required authentication or user interaction, attackers with local access (e.g., via compromised endpoints or insider threats) could leverage this flaw to escalate privileges or maintain persistence. The impact extends to confidentiality breaches, integrity violations through unauthorized code execution, and availability disruptions if attackers deploy destructive payloads. Organizations in sectors with stringent data protection requirements (finance, healthcare, government) are particularly vulnerable to compliance and reputational damage if exploited. Additionally, macOS is increasingly adopted in European enterprises, making the attack surface non-negligible.

To mitigate this vulnerability, European organizations should: 1) Immediately update Miro Desktop to a patched version once available, as no patch links are currently provided but monitoring vendor advisories is critical. 2) Restrict local access to macOS systems running Miro Desktop by enforcing strict endpoint security controls, including least privilege policies and user account management. 3) Employ application whitelisting and integrity monitoring to detect unauthorized modifications to app bundles and asar archives. 4) Use macOS security features such as System Integrity Protection (SIP) and Endpoint Security Framework to monitor suspicious file operations related to app bundle renaming or asar modifications. 5) Conduct regular audits of installed software versions and configurations to identify vulnerable instances. 6) Educate users about the risks of local privilege escalation and enforce strong physical and network access controls to limit attacker footholds. 7) Consider isolating critical collaboration tools in hardened environments or virtualized containers to reduce attack surface.