🛡️ CVE-2022-37797
🟠 CVSS 7.5 — High ⚠️ Exploit Public CWE-476 NVD
7.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

In lighttpd 1.4.65, mod_wstunnel does not initialize a handler function pointer if an invalid HTTP request (websocket handshake) is received. It leads to null pointer dereference which crashes the server. It could be used by an external attacker to cause denial of service condition.

Details

Severity HIGH
CVSS Score 7.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-476
Public Exploit ⚠️ Yes
Source NVD
Published 2022-09-12
Updated 2026-06-08
Modified 2024-11-21
Fix URL N/A

Affected Packages

Software From version Fixed in
debian-linux
lighttpd

References

Exploit, Issue Tracking, Third Party Advisory https://redmine.lighttpd.net/issues/3165
Mailing List, Third Party Advisory https://www.debian.org/security/2022/dsa-5243
Exploit, Issue Tracking, Third Party Advisory https://redmine.lighttpd.net/issues/3165
Mailing List, Third Party Advisory https://www.debian.org/security/2022/dsa-5243

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