CVE-2021-3479

Gentoo Linux Security Advisory 202107-27

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

There's a flaw in OpenEXR's Scanline API functionality in versions before 3.0.0-beta. An attacker who is able to submit a crafted file to be processed by OpenEXR could trigger excessive consumption of memory, resulting in an impact to system availability.

Se presenta un fallo en la funcionalidad de la API Scanline de OpenEXR en versiones anteriores a 3.0.0-beta. Un atacante que pueda ser capaz de enviar un archivo diseñado para que sea procesado por OpenEXR podría desencadenar un consumo excesivo de la memoria, resultando en un impacto para la disponibilidad del sistema.

An update that fixes 5 vulnerabilities is now available. This update for openexr fixes the following issues. Fixed an integer-overflow in Imf_2_5:DwaCompressor:initializeBuffers. Fixed an Integer-overflow in Imf_2_5:DwaCompressor:initializeBuffers. Fixed a Null Pointer dereference in Imf_2_5:hufUncompress. Fixed a Heap-buffer-overflow in Imf_2_5::DeepTiledInputFile::readPixelSampleCounts. Fixed an Out-of-memory caused by allocation of a very large buffer. This update was imported from the SUSE:SLE-15:Update update project.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-03-30 CVE Reserved
2021-03-31 CVE Published
2024-08-03 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-400: Uncontrolled Resource Consumption
CWE-770: Allocation of Resources Without Limits or Throttling

CAPEC

References (5)

URL	Tag	Source
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25370	Issue Tracking
https://lists.debian.org/debian-lts-announce/2021/07/msg00001.html	Mailing List
https://lists.debian.org/debian-lts-announce/2022/12/msg00022.html	Mailing List

URL	Date	SRC

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=1939149	2022-12-13

URL	Date	SRC
https://security.gentoo.org/glsa/202107-27	2022-12-13

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Openexr Search vendor "Openexr"		Openexr Search vendor "Openexr" for product "Openexr"				< 2.4.3 Search vendor "Openexr" for product "Openexr" and version " < 2.4.3"		-		Affected
Openexr Search vendor "Openexr"		Openexr Search vendor "Openexr" for product "Openexr"				>= 2.5.0 < 2.5.4 Search vendor "Openexr" for product "Openexr" and version " >= 2.5.0 < 2.5.4"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected