Denial of Service (DoS) Affecting github.com/shiyanhui/dht Open this link in a new tab package, versions *


0.0
high
  • Attack Complexity

    Low

  • Availability

    High

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  • snyk-id

    SNYK-GOLANG-GITHUBCOMSHIYANHUIDHT-570969

  • published

    3 Jun 2020

  • disclosed

    30 Apr 2020

  • credit

    hMihaiDavid

Introduced: 30 Apr 2020

CWE-400 Open this link in a new tab

How to fix?

There is no fixed version for github.com/shiyanhui/dht.

Overview

github.com/shiyanhui/dht is a package dht implements the bittorrent dht protocol.

Affected versions of this package are vulnerable to Denial of Service (DoS). Within the handleRequest() function, several unchecked type assertions are made to the values of the parsed bencoded UDP packet.

It is possible for a illegal packet that contains a bencode integer instead of a string in the id field to trigger a panic because the type assertion is not checked and recover() is not used. As such, it is possible to crash a process running by sending a malicious package.

Details

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

References