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Divide By Zero Affecting openexr package, versions <2.5.4-2+deb11u1

0.0
medium

Snyk CVSS

    Attack Complexity Low
    Scope Changed
    Availability High
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NVD
6.5 medium
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SUSE
5.5 medium
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Red Hat
4 medium

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  • Snyk ID SNYK-DEBIAN11-OPENEXR-1913915
  • published 10 Nov 2021
  • disclosed 25 Mar 2022
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Introduced: 10 Nov 2021

CVE-2021-3941 Open this link in a new tab
CWE-369 Open this link in a new tab

How to fix?

Upgrade Debian:11 openexr to version 2.5.4-2+deb11u1 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:11. See How to fix? for Debian:11 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.