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AlienVault OTX Vulnerabilities

AlienVault OTX Malware

A flaw was found in the Open Virtual Network (OVN). Specially crafted UDP packets may bypass egress access control lists (ACLs) in OVN installations configured with a logical switch with DNS records set on it and if the same switch has any egress ACLs configured. This issue can lead to unauthorized access to virtual machines and containers running on the OVN network.

CVE-2025-0650 is a vulnerability identified in the Open Virtual Network (OVN) platform, which is widely used for network virtualization in cloud and container environments. The flaw arises from improper access control mechanisms related to egress access control lists (ACLs) on logical switches configured with DNS records. Specifically, attackers can craft UDP packets that bypass these egress ACLs, which are intended to restrict outbound traffic from virtual machines (VMs) and containers. This bypass allows unauthorized network access, potentially enabling attackers to reach protected VMs or containers that should be isolated. The vulnerability does not require any privileges or user interaction, but the attack complexity is high, meaning an attacker needs detailed knowledge of the network configuration and the ability to send crafted UDP packets. The impact spans confidentiality, integrity, and availability, as unauthorized access could lead to data exfiltration, manipulation, or disruption of services. Although no exploits have been observed in the wild yet, the vulnerability's presence in OVN—a critical component in many cloud and container orchestration platforms—makes it a significant risk. The CVSS v3.1 score of 8.1 reflects the high severity, with network attack vector, no privileges required, no user interaction, and high impact on all security properties. The lack of currently available patches necessitates immediate mitigation through network segmentation, enhanced monitoring, and limiting exposure of vulnerable OVN logical switches.

Detailed information about CVE-2025-0650: Improper Access Control. Get real-time updates, technical details, and mitigation strategies.

CVE-2025-0650: Improper Access Control - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2025-0650: Improper Access Control

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