Threats Tagged 'cve-2023-4194'
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Threats Tagged 'cve-2023-4194'
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CVE-2023-4194 is a medium-severity vulnerability in the Linux kernel's TUN/TAP network interface implementation affecting Red Hat Enterprise Linux 9. It allows a local user with limited privileges to bypass network filtering controls and gain unauthorized access to certain resources due to incorrect initialization of socket user IDs. The vulnerability stems from incomplete or incorrect patches addressing a previous flaw (CVE-2023-1076), specifically related to passing inaccurate user ID parameters in kernel code. Exploitation requires local access and no user interaction, with no direct impact on confidentiality but a high impact on integrity by enabling privilege bypass. No known exploits are currently in the wild. European organizations using RHEL 9 in environments where local user access is possible, such as multi-tenant or shared systems, are at risk. Mitigation involves applying updated kernel patches once available and restricting local user privileges. Countries with significant enterprise Linux deployments, such as Germany, France, and the UK, are most likely affected. Join the discussion | CVE Database V5 | 08/07/2023, 13:19:44 UTC Added: 11/14/2025, 14:35:21 UTC |
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