eventing-github vulnerable to denial of service caused by improper enforcement of the timeout on individual read operations

Impact

The eventing-github cluster-local server doesn't set ReadHeaderTimeout‬‭ which could lead do a DDoS‬ ‭attack, where a large group of users send requests to the server causing the server to hang‬ ‭for long enough to deny it from being available to other users, also know as a Slowloris‬ ‭attack.

Patches

Fix in v1.12.1 and v1.11.3

Credits

The vulnerability was reported by Ada Logics during an ongoing security audit of Knative involving Ada Logics, the Knative maintainers, OSTIF and CNCF.