**Issue Overview:**
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. (CVE-2022-37797)
**Affected Packages:**
lighttpd
**Issue Correction:**
Run _yum update lighttpd_ to update your system.
**New Packages:**
i686:
   lighttpd-mod_authn_gssapi-1.4.53-1.37.amzn1.i686
   lighttpd-debuginfo-1.4.53-1.37.amzn1.i686
   lighttpd-fastcgi-1.4.53-1.37.amzn1.i686
   lighttpd-mod_mysql_vhost-1.4.53-1.37.amzn1.i686
   lighttpd-1.4.53-1.37.amzn1.i686
   lighttpd-mod_authn_mysql-1.4.53-1.37.amzn1.i686
   lighttpd-mod_geoip-1.4.53-1.37.amzn1.i686
   lighttpd-mod_authn_pam-1.4.53-1.37.amzn1.i686
src:
   lighttpd-1.4.53-1.37.amzn1.src
x86_64:
   lighttpd-fastcgi-1.4.53-1.37.amzn1.x86_64
   lighttpd-mod_authn_mysql-1.4.53-1.37.amzn1.x86_64
   lighttpd-mod_geoip-1.4.53-1.37.amzn1.x86_64
   lighttpd-mod_authn_gssapi-1.4.53-1.37.amzn1.x86_64
   lighttpd-mod_authn_pam-1.4.53-1.37.amzn1.x86_64
   lighttpd-mod_mysql_vhost-1.4.53-1.37.amzn1.x86_64
   lighttpd-debuginfo-1.4.53-1.37.amzn1.x86_64
   lighttpd-1.4.53-1.37.amzn1.x86_64
### Additional References
Red Hat: [CVE-2022-37797]()
Mitre: [CVE-2022-37797]()Read More