Nessus zegt het volgende :
According to its Server response header, the installed version of nginx is 1.9.5 prior to 1.16.1 or 1.17.x prior to 1.17.3. It is, therefore, affected by multiple denial of service vulnerabilities :
- A denial of service vulnerability exists in the HTTP/2 protocol stack due to improper handling of exceptional conditions. An unauthenticated, remote attacker can exploit this, by manipulating the window size and stream priority of a large data request, to cause a denial of service condition. (CVE-2019-9511)
- A denial of service vulnerability exists in the HTTP/2 protocol stack due to improper handling of exceptional conditions. An unauthenticated, remote attacker can exploit this, by creating multiple request streams and continually shuffling the priority of the streams, to cause a denial of service condition. (CVE-2019-9513)
- A denial of service vulnerability exists in the HTTP/2 protocol stack due to improper handling of exceptional conditions. An unauthenticated, remote attacker can exploit this, by sending a stream of headers with a zero length header name and zero length header value, to cause a denial of service condition. (CVE-2019-9516)
De upgrade verliep niet lekker, aantal apps niet meer werken na upgraden naar Raspbian 11 Bullseye.
Misschien kan ik workarounds vinden per CVE
