CVEvulnerability
CVE-2023-30312
7.3 HIGH
Official page ↗
- Status
- Deferred
- Published
- 2024-05-28
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 7.3 HIGH — CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
- Weaknesses
- CWE-203
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
Weakness · CWE (1)
- CWE-203 Observable Discrepancy weakness
References
- https://blog.apnic.net/2024/06/18/off-path-tcp-hijacking-in-nat-enabled-wi-fi-networks/ blog.apnic.net
- https://news.ycombinator.com/item?id=40723150 news.ycombinator.com
- https://openwrt.org/docs/guide-developer/security openwrt.org
- https://www.ndss-symposium.org/ndss-paper/exploiting-sequence-number-leakage-tcp-hijacking-in-nat-enabled-wi-fi-networks/ www.ndss-symposium.org
- https://blog.apnic.net/2024/06/18/off-path-tcp-hijacking-in-nat-enabled-wi-fi-networks/ blog.apnic.net
- https://news.ycombinator.com/item?id=40723150 news.ycombinator.com
- https://openwrt.org/docs/guide-developer/security openwrt.org
- https://www.ndss-symposium.org/ndss-paper/exploiting-sequence-number-leakage-tcp-hijacking-in-nat-enabled-wi-fi-networks/ www.ndss-symposium.org