CVE-2019-14812

ghostscript: Safer mode bypass by .forceput exposure in setuserparams (701444)

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A flaw was found in all ghostscript versions 9.x before 9.50, in the .setuserparams2 procedure where it did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. A specially crafted PostScript file could disable security protection and then have access to the file system, or execute arbitrary commands.

Se encontró un fallo en todas las versiones de ghostscript 9.x anteriores a la versión 9.50, en el procedimiento .setuserparams2 donde no aseguraba apropiadamente sus llamadas privilegiadas, permitiendo que los scripts omitieran las restricciones "-dSAFER". Un archivo PostScript especialmente diseñado podría deshabilitar la protección de seguridad y luego tener acceso al sistema de archivos o ejecutar comandos arbitrarios.

A flaw was found in the .setuserparams2 procedure where it did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. A specially crafted PostScript file could disable security protection and then have access to the file system, or execute arbitrary commands.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-08-10 CVE Reserved
2019-09-02 CVE Published
2024-08-05 CVE Updated
2024-11-20 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-648: Incorrect Use of Privileged APIs
CWE-732: Incorrect Permission Assignment for Critical Resource

CAPEC

References (7)

URL	Tag	Source
http://git.ghostscript.com/?p=ghostpdl.git%3Ba=commitdiff%3Bh=885444fcbe10dc42787ecb76686c8ee4dd33bf33	X_refsource_confirm
https://access.redhat.com/security/cve/cve-2019-14812	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14812	Issue Tracking
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LBUC4DBBJTRFNCR3IODBV4IXB2C2HI3V	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://security.gentoo.org/glsa/202004-03	2023-11-07
https://access.redhat.com/security/cve/CVE-2019-14812	2019-09-02
https://bugzilla.redhat.com/show_bug.cgi?id=1743754	2019-09-02

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"				>= 9.00 < 9.50 Search vendor "Artifex" for product "Ghostscript" and version " >= 9.00 < 9.50"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				31 Search vendor "Fedoraproject" for product "Fedora" and version "31"		-		Affected