CVE-2021-32815

Denial of service due to assertion failure in crwimage_int.cpp

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. The assertion failure is triggered when Exiv2 is used to modify the metadata of a crafted image file. An attacker could potentially exploit the vulnerability to cause a denial of service, if they can trick the victim into running Exiv2 on a crafted image file. Note that this bug is only triggered when modifying the metadata, which is a less frequently used Exiv2 operation than reading the metadata. For example, to trigger the bug in the Exiv2 command-line application, you need to add an extra command-line argument such as `fi`. ### Patches The bug is fixed in version v0.27.5. ### References Regression test and bug fix: #1739 ### For more information Please see our [security policy](https://github.com/Exiv2/exiv2/security/policy) for information about Exiv2 security.

Exiv2 es una utilidad de línea de comandos y una biblioteca C++ para leer, escribir, borrar y modificar los metadatos de los archivos de imagen. El fallo de aserción es desencadenado cuando Exiv2 es usado para modificar los metadatos de un archivo de imagen diseñado. Un atacante podría explotar potencialmente la vulnerabilidad para causar una denegación de servicio, si puede engañar a la víctima para que ejecute Exiv2 en un archivo de imagen diseñado. Tenga en cuenta que este bug sólo es desencadenado cuando se modifican los metadatos, que es una operación de Exiv2 que es usada con menos frecuencia que la lectura de los metadatos. Por ejemplo, para desencadenar el bug en la aplicación de línea de comandos de Exiv2, es necesario añadir un argumento extra en la línea de comandos como "fi". ### Parches El bug ha sido corregido en la versión v0.27.5. ### Referencias Prueba de regresión y corrección de bug: #1739 ### Para más información Consulte nuestra [política de seguridad](https://github.com/Exiv2/exiv2/security/policy) para obtener información sobre la seguridad de Exiv2

*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:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2021-05-12 CVE Reserved
2021-08-09 CVE Published
2024-04-24 EPSS Updated
2024-11-19 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-617: Reachable Assertion

CAPEC

References (6)

URL	Tag	Source
https://github.com/Exiv2/exiv2/security/advisories/GHSA-mv9g-fxh2-m49m	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/01/msg00004.html	Mailing List

URL	Date	SRC

URL	Date	SRC
https://github.com/Exiv2/exiv2/pull/1739	2023-12-22

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FMDT4PJB7P43WSOM3TRQIY3J33BAFVVE	2023-12-22
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UYGDELIFFJWKUU7SO3QATCIXCZJERGAC	2023-12-22
https://security.gentoo.org/glsa/202312-06	2023-12-22

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Exiv2 Search vendor "Exiv2"		Exiv2 Search vendor "Exiv2" for product "Exiv2"				<= 0.27.4 Search vendor "Exiv2" for product "Exiv2" and version " <= 0.27.4"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				33 Search vendor "Fedoraproject" for product "Fedora" and version "33"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				34 Search vendor "Fedoraproject" for product "Fedora" and version "34"		-		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