Denial of Service (DoS)

Affecting podium package, versions <1.2.5 >=1.2.2

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Overview

podium is Node compatible event emitter with extra features. Affected versions of the package are vulnerable to Denial of Service (DoS). When calling the setImmediate() multiple times, the callbacks are queued for execution and is processed every event loop iteration. This makes it possible for attacker to manipulate calls to the server and cause it consume a high amount of CPU, before crashing.

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

Remediation

Upgrade podium to version 1.2.5 or higher.

References

CVSS Score

7.5
high severity
  • Attack Vector
    Network
  • Attack Complexity
    Low
  • Privileges Required
    None
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    None
  • Integrity
    None
  • Availability
    High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Credit
Mark Reynolds
CWE
CWE-400
Snyk ID
npm:podium:20160913
Disclosed
12 Sep, 2016
Published
20 Dec, 2016