PT-2024-12231 · Openwrt · Openwrt

Ke Xu + 5 · Published 2024-05-28 · Updated 2024-11-07 · CVE-2023-30312

Positive Technologies (AI Summary)

CVSS v3.1

7.3

High

Base vector

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

Name of the Vulnerable Software and Affected Versions OpenWrt versions 18.06 through 22.03 and beyond

Description An issue in OpenWrt allows off-path attackers to hijack TCP sessions. This could lead to a denial of service, impersonating the client to the server, and impersonating the server to the client, potentially allowing access to sensitive information. The issue occurs because nf conntrack tcp no window check is true by default.

Recommendations For OpenWrt versions 18.06 through 22.03 and beyond, consider setting nf conntrack tcp no window check to false to mitigate the risk of TCP session hijacking. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Side Channel Attack

Weakness Enumeration

CWE-203

Related Identifiers

CVE-2023-30312

Affected Products

Openwrt

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2023-30312 · Security Note
• https://news.ycombinator.com/item?id=40723150 · Note
• https://t.me/cvenotify/83705 · Telegram Post
• https://openwrt.org/docs/guide-developer/security · Note
• https://t.me/cvenotify/81262 · Telegram Post
• https://t.me/cvenotify/100915 · Telegram Post
• https://ndss-symposium.org/ndss-paper/exploiting-sequence-number-leakage-tcp-hijacking-in-nat-enabled-wi-fi-networks · Note
• https://blog.apnic.net/2024/06/18/off-path-tcp-hijacking-in-nat-enabled-wi-fi-networks · Note