CVE-2020-15900

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A memory corruption issue was found in Artifex Ghostscript 9.50 and 9.52. Use of a non-standard PostScript operator can allow overriding of file access controls. The 'rsearch' calculation for the 'post' size resulted in a size that was too large, and could underflow to max uint32_t. This was fixed in commit 5d499272b95a6b890a1397e11d20937de000d31b.

Se encontró un problema de corrupción de memoria en Artifex Ghostscript versiones 9.50 y 9.52. El uso de un operador PostScript no estándar puede permitir la anulación de los controles de acceso de archivos. El cálculo de "rsearch" para el tamaño de "post" resultó en un tamaño que era demasiado grande y podría llegar a un máximo de uint32_t. Esto se corrigió en commit 5d499272b95a6b890a1397e11d20937de000d31b

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-07-22 CVE Reserved
2020-07-28 CVE Published
2024-06-18 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-191: Integer Underflow (Wrap or Wraparound)
CWE-787: Out-of-bounds Write

CAPEC

References (9)

URL	Tag	Source
http://git.ghostscript.com/?p=ghostpdl.git%3Ba=log	X_refsource_misc
https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commitdiff%3Bh=5d499272b95a6b890a1397e11d20937de000d31b	X_refsource_misc

URL	Date	SRC

URL	Date	SRC
https://github.com/ArtifexSoftware/ghostpdl/commit/5d499272b95a6b890a1397e11d20937de000d31b	2023-11-07
https://github.com/ArtifexSoftware/ghostpdl/commits/master/psi/zstring.c	2023-11-07

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00004.html	2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00006.html	2023-11-07
https://artifex.com/security-advisories/CVE-2020-15900	2023-11-07
https://security.gentoo.org/glsa/202008-20	2023-11-07
https://usn.ubuntu.com/4445-1	2023-11-07

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"				9.50 Search vendor "Artifex" for product "Ghostscript" and version "9.50"		-		Affected
Artifex Search vendor "Artifex"		Ghostscript Search vendor "Artifex" for product "Ghostscript"				9.52 Search vendor "Artifex" for product "Ghostscript" and version "9.52"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				20.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "20.04"		lts		Affected
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				15.1 Search vendor "Opensuse" for product "Leap" and version "15.1"		-		Affected
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				15.2 Search vendor "Opensuse" for product "Leap" and version "15.2"		-		Affected