CVE-2024-8100 is a high-severity vulnerability affecting multiple versions of Arista Networks' CloudVision Portal (CVP on-premises), spanning from 2018 through 2024.3.0 releases. The vulnerability arises from improper privilege management (CWE-269) related to the time-bound device onboarding token mechanism. Specifically, this token, which is intended to facilitate secure device onboarding within a limited time window, can be exploited to escalate privileges and gain administrative access to the CloudVision platform. The CVSS 3.1 base score of 8.7 reflects the critical nature of this flaw, with an attack vector of network (AV:N), low attack complexity (AC:L), requiring high privileges (PR:H), no user interaction (UI:N), and scope change (S:C). The impact on confidentiality and integrity is high, while availability is not affected. The vulnerability allows an attacker who already has some level of privileged access to leverage the onboarding token to gain full administrative control over the CloudVision Portal. This could enable unauthorized configuration changes, device management, and potentially lateral movement within the network infrastructure managed by CloudVision. Although no known exploits are currently reported in the wild, the vulnerability's characteristics make it a significant risk for organizations relying on Arista's CloudVision for network management. The lack of available patches at the time of publication increases the urgency for mitigation and monitoring. Given CloudVision's role in managing network devices and configurations, exploitation could lead to severe operational disruptions and compromise of network integrity.

For European organizations, the impact of CVE-2024-8100 could be substantial, especially for enterprises and service providers that utilize Arista CloudVision for network device management. Successful exploitation could lead to unauthorized administrative access, allowing attackers to alter network configurations, disable security controls, or introduce malicious changes that compromise network integrity and confidentiality. This could disrupt critical business operations, lead to data breaches, and undermine trust in network infrastructure. Given the scope change indicated in the CVSS vector, an attacker could potentially affect multiple devices and systems managed by CloudVision, amplifying the impact. Sectors such as telecommunications, finance, energy, and government, which rely heavily on robust network management, are particularly at risk. Additionally, the ability to escalate privileges without user interaction and over the network increases the likelihood of remote exploitation, potentially by insider threats or attackers who have gained initial privileged access. The absence of known exploits in the wild provides a window for proactive defense, but organizations must act swiftly to prevent exploitation.

1. Immediate review and restriction of access to the device onboarding tokens within CloudVision to minimize exposure. 2. Implement strict access controls and monitoring around privileged accounts and onboarding token usage to detect anomalous activities. 3. Employ network segmentation to limit the exposure of CloudVision management interfaces to trusted administrative networks only. 4. Monitor logs and audit trails for unusual privilege escalations or token usage patterns. 5. Engage with Arista Networks for updates on patches or mitigations as none are currently available; consider applying any recommended configuration changes or workarounds. 6. Conduct internal penetration testing and vulnerability assessments focusing on CloudVision to identify potential exploitation paths. 7. Educate network administrators about the risks associated with onboarding tokens and enforce best practices for token lifecycle management. 8. Prepare incident response plans specific to CloudVision compromise scenarios to enable rapid containment and recovery.