Threats Tagged 'cve-2023-3773'
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Threats Tagged 'cve-2023-3773'
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CVE-2023-3773 is a medium severity vulnerability in the Linux kernel's XFRM subsystem affecting Red Hat Enterprise Linux 9. It allows a malicious user with CAP_NET_ADMIN privileges to trigger a 4-byte out-of-bounds read when parsing netlink attributes, potentially leaking sensitive heap data to userspace. The flaw does not allow code execution or denial of service but risks confidentiality by exposing kernel memory contents. Exploitation requires local privileges and no user interaction. No known exploits are currently reported in the wild. European organizations using RHEL 9 in sensitive network environments should prioritize patching once available and restrict CAP_NET_ADMIN capabilities. Countries with significant RHEL adoption and critical infrastructure relying on Linux are most at risk. Mitigations include minimizing privileged user access, monitoring for anomalous netlink activity, and applying kernel updates promptly. The vulnerability’s CVSS score is 5.5, reflecting moderate impact primarily on confidentiality without integrity or availability compromise. Join the discussion | CVE Database V5 | 07/25/2023, 15:47:40 UTC Added: 11/14/2025, 14:35:21 UTC |
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