CVE-2022-2085

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A NULL pointer dereference vulnerability was found in Ghostscript, which occurs when it tries to render a large number of bits in memory. When allocating a buffer device, it relies on an init_device_procs defined for the device that uses it as a prototype that depends upon the number of bits per pixel. For bpp > 64, mem_x_device is used and does not have an init_device_procs defined. This flaw allows an attacker to parse a large number of bits (more than 64 bits per pixel), which triggers a NULL pointer dereference flaw, causing an application to crash.

Se ha encontrado una vulnerabilidad de desreferencia de puntero NULL en Ghostscript, que es producida cuando trata de representar un gran número de bits en la memoria. Cuando asigna un dispositivo de búfer, es basado en un init_device_procs definido para el dispositivo que lo usa como prototipo que depende del número de bits por píxel. Para bpp > 64, es usado mem_x_device y no presenta un init_device_procs definido. Este fallo permite a un atacante analizar un gran número de bits (más de 64 bits por píxel), lo que desencadena un fallo de desreferencia de puntero NULL, causando el bloqueo de una aplicación

*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

2022-06-15 CVE Reserved
2022-06-16 CVE Published
2024-08-03 CVE Updated
2024-08-03 First Exploit
2024-09-07 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-476: NULL Pointer Dereference

CAPEC

References (6)

URL	Tag	Source
http://git.ghostscript.com/?p=ghostpdl.git%3Bh=ae1061d948d88667bdf51d47d918c4684d0f67df
https://security.gentoo.org/glsa/202309-03

URL	Date	SRC
https://bugs.ghostscript.com/show_bug.cgi?id=704945	2024-08-03

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=2095261	2023-09-17

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ERSZX5LKDWAHZWJYBMP2E2UHOPUCDEGV	2023-09-17
https://security.gentoo.org/glsa/202211-11	2023-09-17

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Artifex Search vendor "Artifex"		Ghostscript Search vendor "Artifex" for product "Ghostscript"				9.55.0 Search vendor "Artifex" for product "Ghostscript" and version "9.55.0"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				35 Search vendor "Fedoraproject" for product "Fedora" and version "35"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				36 Search vendor "Fedoraproject" for product "Fedora" and version "36"		-		Affected