CVE-2021-27815

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

NULL Pointer Deference in the exif command line tool, when printing out XML formatted EXIF data, in exif v0.6.22 and earlier allows attackers to cause a Denial of Service (DoS) by uploading a malicious JPEG file, causing the application to crash.

Una desreferencia de puntero NULL en la herramienta de línea de comandos exif, al imprimir datos EXIF con formato XML, en exif versión v0.6.22 y anteriores permite a atacantes causar una Denegación de Servicio (DoS) al cargar un archivo JPEG malicioso, causando que la aplicación se bloquee

*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

2021-03-01 CVE Reserved
2021-04-14 CVE Published
2023-12-29 EPSS Updated
2024-08-03 CVE Updated
2024-08-03 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-476: NULL Pointer Dereference

CAPEC

References (7)

URL	Tag	Source

URL	Date	SRC
https://github.com/libexif/exif/issues/4	2024-08-03

URL	Date	SRC
https://github.com/libexif/exif/commit/eb84b0e3c5f2a86013b6fcfb800d187896a648fa	2023-11-07
https://github.com/libexif/exif/commit/f6334d9d32437ef13dc902f0a88a2be0063d9d1c	2023-11-07

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JSWAXZVNXYLV3E4R6YQTEGRGMGWEAR76	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QMC6OTXZRPCUD3LOSWO4ISR7CH7NJQDT	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZQ3L45F7S7PQPG5HEHXOCGNOO64MJOS	2023-11-07
https://security.gentoo.org/glsa/202210-28	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Libexif Project Search vendor "Libexif Project"		Exif Search vendor "Libexif Project" for product "Exif"				<= 0.6.22 Search vendor "Libexif Project" for product "Exif" and version " <= 0.6.22"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				32 Search vendor "Fedoraproject" for product "Fedora" and version "32"		-		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