CVE-2023-30312

7.3 HIGH
Published: May 28, 2024 Modified: April 15, 2026
View on NVD

Description

An issue discovered in OpenWrt 18.06, 19.07, 21.02, 22.03, and beyond allows off-path attackers to hijack TCP sessions, which could lead to a denial of service, impersonating the client to the server (e.g., for access to files over FTP), and impersonating the server to the client (e.g., to deliver false information from a finance website). This occurs because nf_conntrack_tcp_no_window_check is true by default.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

Quick Stats

CVSS v3 Score
7.3 / 10.0
EPSS (Exploit Probability)
0.2%
39th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)