Denial of Service (DoS) Affecting hapi package, versions >=2.0.0 <2.2.0

hapi is a simple to use configuration-centric framework with built-in support for input validation, caching, authentication, and other essential facilities for building web and services applications.

Affected versions of this package are vulnerable to Denial of Service (DoS) attacks. Due to a file descriptor leak, when triggered repeatedly, it may cause the server to run out of file descriptors and the node process to die.

Note: This vulnerability allows an attacker to take down a hapi-based server running versions 2.0.x and 2.1.x. This does NOT affect hapi 1.x deployments.

Denial of Service (DoS) describes a family of attacks, all aimed at making a system inaccessible to its intended and legitimate users.

Unlike other vulnerabilities, DoS attacks usually do not aim at breaching security. Rather, they are focused on making websites and services unavailable to genuine users resulting in downtime.

One popular Denial of Service vulnerability is DDoS (a Distributed Denial of Service), an attack that attempts to clog network pipes to the system by generating a large volume of traffic from many machines.

When it comes to open source libraries, DoS vulnerabilities allow attackers to trigger such a crash or crippling of the service by using a flaw either in the application code or from the use of open source libraries.

Two common types of DoS vulnerabilities:

• High CPU/Memory Consumption- An attacker sending crafted requests that could cause the system to take a disproportionate amount of time to process. For example, commons-fileupload:commons-fileupload.

• Crash - An attacker sending crafted requests that could cause the system to crash. For Example, npm ws package

• https://github.com/spumko/hapi/issues/1427