Denial of Service (DoS) Affecting microsoft.chakracore.vc140 package, versions [,1.2.3)

  • Attack Complexity


  • User Interaction


  • Confidentiality


  • Integrity


  • Availability


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  • snyk-id


  • published

    16 Jun 2016

  • disclosed

    16 Jun 2016

  • credit


How to fix?

Upgrade Microsoft.ChakraCore.vc140 to version 1.2.3 or higher.


Microsoft.ChakraCore.vc140 is the core part of the Chakra Javascript engine that powers Microsoft Edge.

Affected versions of this package are vulnerable to Denial of Service (DoS)

The Microsoft (1) Chakra JavaScript, (2) JScript, and (3) VBScript engines, as used in Microsoft Internet Explorer 10 and 11 and Microsoft Edge, allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Scripting Engine Memory Corruption Vulnerability."


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