Divide By Zero Affecting openexr package, versions <3.1.5-2


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-DEBIAN12-OPENEXR-1913913
  • published10 Nov 2021
  • disclosed25 Mar 2022

Introduced: 10 Nov 2021

CVE-2021-3941  (opens in a new tab)
CWE-369  (opens in a new tab)

How to fix?

Upgrade Debian:12 openexr to version 3.1.5-2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openexr package and not the openexr package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

In ImfChromaticities.cpp routine RGBtoXYZ(), there are some division operations such as float Z = (1 - chroma.white.x - chroma.white.y) * Y / chroma.white.y; and chroma.green.y * (X + Z))) / d; but the divisor is not checked for a 0 value. A specially crafted file could trigger a divide-by-zero condition which could affect the availability of programs linked with OpenEXR.

CVSS Scores

version 3.1