Alibaba Cloud Linux 3 : 0123: ghostscript (ALINUX3-SA-2022:0123)

critical Nessus Plugin ID 236536

Synopsis

The remote Alibaba Cloud Linux host is missing one or more security updates.

Description

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2022:0123 advisory.

Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

CVE-2019-10216:
In ghostscript before version 9.50, the .buildfont1 procedure did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. An attacker could abuse this flaw by creating a specially crafted PostScript file that could escalate privileges and access files outside of restricted areas.

CVE-2019-14811:
A flaw was found in, ghostscript versions prior to 9.50, in the .pdf_hook_DSC_Creator 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.

CVE-2019-14812:
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.

CVE-2019-14813:
A flaw was found in ghostscript, versions 9.x before 9.50, in the setsystemparams 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.

CVE-2019-14817:
A flaw was found in, ghostscript versions prior to 9.50, in the .pdfexectoken and other procedures 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.

CVE-2019-14869:
A flaw was found in all versions of ghostscript 9.x before 9.50, where the `.charkeys` procedure, where it did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. An attacker could abuse this flaw by creating a specially crafted PostScript file that could escalate privileges within the Ghostscript and access files outside of restricted areas or execute commands.

CVE-2019-3835:
It was found that the superexec operator was available in the internal dictionary in ghostscript before 9.27. A specially crafted PostScript file could use this flaw in order to, for example, have access to the file system outside of the constrains imposed by -dSAFER.

CVE-2019-3838:
It was found that the forceput operator could be extracted from the DefineResource method in ghostscript before 9.27. A specially crafted PostScript file could use this flaw in order to, for example, have access to the file system outside of the constrains imposed by -dSAFER.

CVE-2019-3839:
It was found that in ghostscript some privileged operators remained accessible from various places after the CVE-2019-6116 fix. A specially crafted PostScript file could use this flaw in order to, for example, have access to the file system outside of the constrains imposed by -dSAFER. Ghostscript versions before 9.27 are vulnerable.

CVE-2019-6116:
In Artifex Ghostscript through 9.26, ephemeral or transient procedures can allow access to system operators, leading to remote code execution.

Tenable has extracted the preceding description block directly from the Alibaba Cloud Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

Plugin Details

Severity: Critical

ID: 236536

File Name: alinux3_sa_2022-0123.nasl

Version: 1.1

Type: local

Family: Alibaba Cloud Linux Local Security Checks

Published: 5/14/2025

Updated: 5/14/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 8.9

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2019-14813

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.4

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:alibabacloud:alibaba_cloud_linux_3, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:ghostscript-tools-dvipdf, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:ghostscript-x11, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:ghostscript-x11-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libgs-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:ghostscript-doc, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:ghostscript-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:ghostscript-tools-printing, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:ghostscript, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:ghostscript-gtk, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:ghostscript-tools-fonts, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libgs, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libgs-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:ghostscript-debugsource, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:ghostscript-gtk-debuginfo

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/Alibaba/release, Host/Alibaba/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/26/2020

Vulnerability Publication Date: 1/23/2019

Reference Information

CVE: CVE-2019-10216, CVE-2019-14811, CVE-2019-14812, CVE-2019-14813, CVE-2019-14817, CVE-2019-14869, CVE-2019-3835, CVE-2019-3838, CVE-2019-3839, CVE-2019-6116

Detections

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