CVE-2022-0247 is a vulnerability identified in Google LLC's Fuchsia operating system, categorized under CWE-732, which pertains to incorrect permission assignment for critical resources. The flaw arises from the way Virtual Memory Objects (VMOs) are handled within Fuchsia. Specifically, the vulnerability allows a local attacker to modify VMO data through access to copy-on-write snapshots. VMOs are kernel objects representing memory buffers, and copy-on-write snapshots are mechanisms that allow processes to create snapshots of these buffers without duplicating the entire data immediately. Due to improper permission checks, an attacker with local access can alter objects within a VMO that they should not have permission to modify. This undermines the integrity of the memory objects and potentially compromises the security model of the system. The vulnerability requires local access, meaning remote exploitation is not feasible without prior system access. The issue was addressed in commits past d97c05d2301799ed585620a9c5c739d36e7b5d3d, and users are advised to upgrade to patched versions. No known exploits have been reported in the wild, and the affected versions are unspecified, indicating that the vulnerability may affect multiple or all versions prior to the patch. The vulnerability impacts the confidentiality and integrity of system memory objects but does not directly affect availability. Since Fuchsia is a relatively new and specialized OS primarily developed by Google for experimental and IoT use cases, the attack surface is currently limited compared to mainstream operating systems.

For European organizations, the impact of CVE-2022-0247 is currently limited due to the relatively low adoption of the Fuchsia OS in enterprise environments. However, as Fuchsia is designed for embedded systems, IoT devices, and potentially future consumer electronics, organizations involved in sectors such as telecommunications, manufacturing, smart infrastructure, and IoT deployments could be affected if they incorporate Fuchsia-based devices. The vulnerability allows a local attacker to escalate privileges or tamper with critical memory objects, potentially leading to unauthorized data modification or privilege escalation on affected devices. This could compromise the integrity of systems controlling critical infrastructure or sensitive data. Given the local access requirement, the threat is more relevant in environments where physical or local network access is possible, such as in manufacturing plants, telecom facilities, or offices with Fuchsia-based devices. The lack of known exploits reduces immediate risk, but the vulnerability could be leveraged in targeted attacks or insider threat scenarios. Organizations relying on Fuchsia for critical operations should consider the risk of unauthorized modification of memory objects, which could undermine system trustworthiness and data integrity.

1. Immediate Upgrade: Organizations using Fuchsia should upgrade to versions including or beyond the commit d97c05d2301799ed585620a9c5c739d36e7b5d3d where the vulnerability is patched. 2. Access Control Hardening: Restrict local access to Fuchsia devices strictly to trusted personnel and secure physical and network access points to prevent unauthorized local exploitation. 3. Monitoring and Logging: Implement detailed monitoring of local access attempts and unusual memory or process behavior on Fuchsia devices to detect potential exploitation attempts. 4. Segmentation: Isolate Fuchsia-based devices within network segments with limited access to reduce the risk of lateral movement by attackers who gain local access. 5. Vendor Coordination: Engage with device vendors deploying Fuchsia to ensure timely patching and to understand the deployment scope within the organization. 6. Security Audits: Conduct regular security audits and penetration testing focusing on local privilege escalation vectors on Fuchsia devices. 7. Incident Response Preparedness: Prepare incident response plans that include scenarios involving local exploitation of embedded or IoT devices running Fuchsia.