RHEL 7 : ghostscript (RHSA-2018:3834)

Severity

Theme

RHEL 7 : ghostscript (RHSA-2018:3834)

critical Nessus Plugin ID 119736

Language:

New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

The remote Red Hat host is missing one or more security updates.

Description

An update for ghostscript is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The Ghostscript suite contains utilities for rendering PostScript and PDF documents. Ghostscript translates PostScript code to common bitmap formats so that the code can be displayed or printed.

Security Fix(es) :

* ghostscript: Incorrect free logic in pagedevice replacement (699664) (CVE-2018-16541)

* ghostscript: Incorrect 'restoration of privilege' checking when running out of stack during exception handling (CVE-2018-16802)

* ghostscript: User-writable error exception table (CVE-2018-17183)

* ghostscript: Saved execution stacks can leak operator arrays (incomplete fix for CVE-2018-17183) (CVE-2018-17961)

* ghostscript: Saved execution stacks can leak operator arrays (CVE-2018-18073)

* ghostscript: 1Policy operator allows a sandbox protection bypass (CVE-2018-18284)

* ghostscript: Type confusion in setpattern (700141) (CVE-2018-19134)

* ghostscript: Improperly implemented security check in zsetdevice function in psi/zdevice.c (CVE-2018-19409)

* ghostscript: Uninitialized memory access in the aesdecode operator (699665) (CVE-2018-15911)

For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.

Red Hat would like to thank Tavis Ormandy (Google Project Zero) for reporting CVE-2018-16541.

Bug Fix(es) :

* It has been found that ghostscript-9.07-31.el7_6.1 introduced regression during the handling of shading objects, causing a 'Dropping incorrect smooth shading object' warning. With this update, the regression has been fixed and the described problem no longer occurs.
(BZ#1657822)

Solution

Update the affected packages.

Plugin Details

Severity: Critical

ID: 119736

File Name: redhat-RHSA-2018-3834.nasl

Version: 1.10

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 12/18/2018

Updated: 8/24/2020

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: High

Score: 7.3

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

Temporal Vector: E:POC/RL:OF/RC:C

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

Temporal Vector: E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:ghostscript, p-cpe:/a:redhat:enterprise_linux:ghostscript-cups, p-cpe:/a:redhat:enterprise_linux:ghostscript-debuginfo, p-cpe:/a:redhat:enterprise_linux:ghostscript-devel, p-cpe:/a:redhat:enterprise_linux:ghostscript-doc, p-cpe:/a:redhat:enterprise_linux:ghostscript-gtk, cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:7.6

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/17/2018

Vulnerability Publication Date: 8/28/2018

Reference Information

CVE: CVE-2018-15911, CVE-2018-16541, CVE-2018-16802, CVE-2018-17183, CVE-2018-17961, CVE-2018-18073, CVE-2018-18284, CVE-2018-19134, CVE-2018-19409

RHSA: 2018:3834

IAVB: 2019-B-0081-S