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CVE-2021-3941

Date: March 25, 2022

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.

Severity Score

Related Resources (10)

https://security-tracker.debian.org/tracker/CVE-2021-3941
https://www.debian.org/security/2022/dsa-5299
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-3941
https://bugzilla.redhat.com/show_bug.cgi?id=2019789
https://security.gentoo.org/glsa/202210-31
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/I2JSMJ7HLWFPYYV7IAQZD5ZUUUN7RWBN/
https://lists.debian.org/debian-lts-announce/2022/12/msg00022.html
https://nvd.nist.gov/vuln/detail/CVE-2021-3941
https://access.redhat.com/security/cve/CVE-2021-3941
https://www.mend.io/vulnerability-database/CVE-2021-3941

Severity Score

Weakness Type (CWE)

Divide By Zero

CWE-369

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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