CVE-2023-30312

Published: May 28, 2024Modified: Jun 17, 2026Deferred

7.3

Vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

Exploitability: 2.1 / Impact: 5.2

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

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.

Related CWEs

Observable Discrepancy

The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.

References (8)

https://blog.apnic.net/2024/06/18/off-path-tcp-hijacking-in-nat-enabled-wi-fi-networks/

Source: cve@mitre.org

https://news.ycombinator.com/item?id=40723150

Source: cve@mitre.org

https://openwrt.org/docs/guide-developer/security

Source: cve@mitre.org

https://www.ndss-symposium.org/ndss-paper/exploiting-sequence-number-leakage-tcp-hijacking-in-nat-enabled-wi-fi-networks/

Source: cve@mitre.org

https://blog.apnic.net/2024/06/18/off-path-tcp-hijacking-in-nat-enabled-wi-fi-networks/

Source: af854a3a-2127-422b-91ae-364da2661108

https://news.ycombinator.com/item?id=40723150

Source: af854a3a-2127-422b-91ae-364da2661108

https://openwrt.org/docs/guide-developer/security

Source: af854a3a-2127-422b-91ae-364da2661108

https://www.ndss-symposium.org/ndss-paper/exploiting-sequence-number-leakage-tcp-hijacking-in-nat-enabled-wi-fi-networks/

Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.