Divide By Zero Affecting ImageMagick/ImageMagick package, versions [,6.9.10-68)[7.0.0-0,7.0.8-68)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Not Defined
EPSS
0.06% (31st percentile)

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  • Snyk IDSNYK-UNMANAGED-IMAGEMAGICKIMAGEMAGICK-3007926
  • published26 Jan 2022
  • disclosed8 Dec 2020
  • creditUnknown

Introduced: 8 Dec 2020

CVE-2020-27750  (opens in a new tab)
CWE-369  (opens in a new tab)

How to fix?

Upgrade ImageMagick/ImageMagick to version 6.9.10-68, 7.0.8-68 or higher.

Overview

Affected versions of this package are vulnerable to Divide By Zero. A flaw was found in ImageMagick in MagickCore/colorspace-private.h and MagickCore/quantum.h. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefined behavior in the form of values outside the range of type unsigned char and math division by zero. This would most likely lead to an impact to application availability, but could potentially cause other problems related to undefined behavior. This flaw affects ImageMagick versions prior to 7.0.8-68.

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

CVSS Scores

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