Vulnerabilities > CVE-2022-37797 - NULL Pointer Dereference vulnerability in multiple products
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
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.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 1 | |
| OS | 1 |
Common Weakness Enumeration (CWE)
References
- https://lists.debian.org/debian-lts-announce/2022/10/msg00002.html
- https://redmine.lighttpd.net/issues/3165
- https://security.gentoo.org/glsa/202210-12
- https://www.debian.org/security/2022/dsa-5243
- https://lists.debian.org/debian-lts-announce/2022/10/msg00002.html
- https://www.debian.org/security/2022/dsa-5243
- https://security.gentoo.org/glsa/202210-12
- https://redmine.lighttpd.net/issues/3165