CVE-2021-29473

Out-of-bounds read in Exiv2::Jp2Image::doWriteMetadata

Severity Score

2.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and ICC image metadata. An out-of-bounds read was found in Exiv2 versions v0.27.3 and earlier. Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. The out-of-bounds read is triggered when Exiv2 is used to write metadata into a crafted image file. An attacker could potentially exploit the vulnerability to cause a denial of service by crashing Exiv2, if they can trick the victim into running Exiv2 on a crafted image file. Note that this bug is only triggered when writing 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 `insert`. The bug is fixed in version v0.27.4. Please see our security policy for information about Exiv2 security.

Exiv2 es una biblioteca C++ y una utilidad de línea de comandos para leer, escribir, eliminar y modificar metadatos de imágenes Exif, IPTC, XMP e ICC. Se encontró una lectura fuera de límites en Exiv2 versiones v0.27.3 y anteriores. Exiv2 es una utilidad de línea de comandos y una biblioteca C++ para leer, escribir, eliminar y modificar los metadatos de archivos de imagen. La lectura fuera de límites es desencadenada cuando es usado Exiv2 para escribir metadatos en un archivo de imagen diseñado. Un atacante podría explotar la vulnerabilidad para causar una denegación de servicio al bloquear Exiv2, si puede engañar a la víctima de ejecutar Exiv2 en un archivo de imagen diseñado. Nota que este bug solo es desencadenado al escribir los metadatos, que es una operación Exiv2 que es usado con menos frecuencia que la lectura de los metadatos. Por ejemplo, para desencadenar el bug en la aplicación de línea de comandos Exiv2, necesita agregar un argumento de línea de comando adicional como "insert". El bug es corregido en versión v0.27.4. Véase nuestra política de seguridad para información sobre la seguridad de Exiv2

A flaw was found in exiv2. An out-of-bounds read in the Exiv2::Jp2Image::doWriteMetadata function may allow a remote attacker to crash an application using exiv2 library. The highest threat from this vulnerability is to application availability.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

High

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
2021-04-26 CVE Published
2024-06-27 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-125: Out-of-bounds Read

CAPEC

References (12)

URL	Tag	Source
https://github.com/Exiv2/exiv2/security/policy	Release Notes
https://github.com/github/advisory-review/pull/1587	Broken Link
https://lists.debian.org/debian-lts-announce/2021/08/msg00028.html	Mailing List

URL	Date	SRC

URL	Date	SRC
https://github.com/Exiv2/exiv2/security/advisories/GHSA-7569-phvm-vwc2	2024-02-16

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2XQT5F5IINTDYDAFGVGQZ7PMMLG7I5ZZ	2024-02-16
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JWZLDECIXXW3CCZ3RS4A3NG5X5VE4WZM	2024-02-16
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LBKWLTXM7IKZ4PVGKLUQVAVFAYGGF7QR	2024-02-16
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/P2A5GMJEXQ5Q76JK6F6VKK5JYCLVFGKN	2024-02-16
https://security.gentoo.org/glsa/202312-06	2024-02-16
https://www.debian.org/security/2021/dsa-4958	2024-02-16
https://access.redhat.com/security/cve/CVE-2021-29473	2021-11-09
https://bugzilla.redhat.com/show_bug.cgi?id=1954065	2021-11-09

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"				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