Denial of Service (DoS) Affecting jpeg-js package, versions <0.4.0



    Attack Complexity High
    Availability High

    Threat Intelligence

    EPSS 0.06% (23rd percentile)
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5.5 medium

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  • Snyk ID SNYK-JS-JPEGJS-570039
  • published 22 Apr 2020
  • disclosed 22 Apr 2020
  • credit Unknown

How to fix?

Upgrade jpeg-js to version 0.4.0 or higher.


Affected versions of this package are vulnerable to Denial of Service (DoS). The attacker could manipulate the exif data in the image file such as change the image pixel to 64250x64250pixels. If the module loaded the crafted image, it tries to allocate 4128062500 pixels into memory.


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