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Red Hat Security Advisory 2018-3834-01

Red Hat Security Advisory 2018-3834-01
Posted Dec 18, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-3834-01 - 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. Issues addressed include a bypass vulnerability.

tags | advisory, bypass
systems | linux, redhat
advisories | 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
SHA-256 | f5f96e39e74386a862dbdf24dde2652838709fb7d29500c0d76bd6ebb2ae845e

Red Hat Security Advisory 2018-3834-01

Change Mirror Download
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Hash: SHA256

====================================================================
Red Hat Security Advisory

Synopsis: Important: ghostscript security and bug fix update
Advisory ID: RHSA-2018:3834-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2018:3834
Issue date: 2018-12-17
CVE Names: 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
====================================================================
1. Summary:

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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Client (v. 7) - x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - noarch, x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch, x86_64
Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - noarch, x86_64
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) - aarch64, ppc64le, s390x
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) - aarch64, noarch, ppc64le, s390x

3. Description:

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)

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1625832 - CVE-2018-15911 ghostscript: Uninitialized memory access in the aesdecode operator (699665)
1625846 - CVE-2018-16541 ghostscript: Incorrect free logic in pagedevice replacement (699664)
1627959 - CVE-2018-16802 ghostscript: Incorrect "restoration of privilege" checking when running out of stack during exception handling
1632471 - CVE-2018-17183 ghostscript: User-writable error exception table
1642578 - CVE-2018-17961 ghostscript: Saved execution stacks can leak operator arrays (incomplete fix for CVE-2018-17183)
1642584 - CVE-2018-18073 ghostscript: Saved execution stacks can leak operator arrays
1642940 - CVE-2018-18284 ghostscript: 1Policy operator allows a sandbox protection bypass
1652583 - CVE-2018-19409 ghostscript: Improperly implemented security check in zsetdevice function in psi/zdevice.c
1655599 - CVE-2018-19134 ghostscript: Type confusion in setpattern (700141)
1657822 - ghostscript: Regression: Warning: Dropping incorrect smooth shading object (Error: /rangecheck in --run--) [rhel-7.6.z]

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
ghostscript-9.07-31.el7_6.6.src.rpm

x86_64:
ghostscript-9.07-31.el7_6.6.i686.rpm
ghostscript-9.07-31.el7_6.6.x86_64.rpm
ghostscript-cups-9.07-31.el7_6.6.x86_64.rpm
ghostscript-debuginfo-9.07-31.el7_6.6.i686.rpm
ghostscript-debuginfo-9.07-31.el7_6.6.x86_64.rpm

Red Hat Enterprise Linux Client Optional (v. 7):

noarch:
ghostscript-doc-9.07-31.el7_6.6.noarch.rpm

x86_64:
ghostscript-debuginfo-9.07-31.el7_6.6.i686.rpm
ghostscript-debuginfo-9.07-31.el7_6.6.x86_64.rpm
ghostscript-devel-9.07-31.el7_6.6.i686.rpm
ghostscript-devel-9.07-31.el7_6.6.x86_64.rpm
ghostscript-gtk-9.07-31.el7_6.6.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
ghostscript-9.07-31.el7_6.6.src.rpm

x86_64:
ghostscript-9.07-31.el7_6.6.i686.rpm
ghostscript-9.07-31.el7_6.6.x86_64.rpm
ghostscript-cups-9.07-31.el7_6.6.x86_64.rpm
ghostscript-debuginfo-9.07-31.el7_6.6.i686.rpm
ghostscript-debuginfo-9.07-31.el7_6.6.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

noarch:
ghostscript-doc-9.07-31.el7_6.6.noarch.rpm

x86_64:
ghostscript-debuginfo-9.07-31.el7_6.6.i686.rpm
ghostscript-debuginfo-9.07-31.el7_6.6.x86_64.rpm
ghostscript-devel-9.07-31.el7_6.6.i686.rpm
ghostscript-devel-9.07-31.el7_6.6.x86_64.rpm
ghostscript-gtk-9.07-31.el7_6.6.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
ghostscript-9.07-31.el7_6.6.src.rpm

ppc64:
ghostscript-9.07-31.el7_6.6.ppc.rpm
ghostscript-9.07-31.el7_6.6.ppc64.rpm
ghostscript-cups-9.07-31.el7_6.6.ppc64.rpm
ghostscript-debuginfo-9.07-31.el7_6.6.ppc.rpm
ghostscript-debuginfo-9.07-31.el7_6.6.ppc64.rpm

ppc64le:
ghostscript-9.07-31.el7_6.6.ppc64le.rpm
ghostscript-cups-9.07-31.el7_6.6.ppc64le.rpm
ghostscript-debuginfo-9.07-31.el7_6.6.ppc64le.rpm

s390x:
ghostscript-9.07-31.el7_6.6.s390.rpm
ghostscript-9.07-31.el7_6.6.s390x.rpm
ghostscript-cups-9.07-31.el7_6.6.s390x.rpm
ghostscript-debuginfo-9.07-31.el7_6.6.s390.rpm
ghostscript-debuginfo-9.07-31.el7_6.6.s390x.rpm

x86_64:
ghostscript-9.07-31.el7_6.6.i686.rpm
ghostscript-9.07-31.el7_6.6.x86_64.rpm
ghostscript-cups-9.07-31.el7_6.6.x86_64.rpm
ghostscript-debuginfo-9.07-31.el7_6.6.i686.rpm
ghostscript-debuginfo-9.07-31.el7_6.6.x86_64.rpm

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7):

Source:
ghostscript-9.07-31.el7_6.6.src.rpm

aarch64:
ghostscript-9.07-31.el7_6.6.aarch64.rpm
ghostscript-cups-9.07-31.el7_6.6.aarch64.rpm
ghostscript-debuginfo-9.07-31.el7_6.6.aarch64.rpm

ppc64le:
ghostscript-9.07-31.el7_6.6.ppc64le.rpm
ghostscript-cups-9.07-31.el7_6.6.ppc64le.rpm
ghostscript-debuginfo-9.07-31.el7_6.6.ppc64le.rpm

s390x:
ghostscript-9.07-31.el7_6.6.s390.rpm
ghostscript-9.07-31.el7_6.6.s390x.rpm
ghostscript-cups-9.07-31.el7_6.6.s390x.rpm
ghostscript-debuginfo-9.07-31.el7_6.6.s390.rpm
ghostscript-debuginfo-9.07-31.el7_6.6.s390x.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

noarch:
ghostscript-doc-9.07-31.el7_6.6.noarch.rpm

ppc64:
ghostscript-debuginfo-9.07-31.el7_6.6.ppc.rpm
ghostscript-debuginfo-9.07-31.el7_6.6.ppc64.rpm
ghostscript-devel-9.07-31.el7_6.6.ppc.rpm
ghostscript-devel-9.07-31.el7_6.6.ppc64.rpm
ghostscript-gtk-9.07-31.el7_6.6.ppc64.rpm

ppc64le:
ghostscript-debuginfo-9.07-31.el7_6.6.ppc64le.rpm
ghostscript-devel-9.07-31.el7_6.6.ppc64le.rpm
ghostscript-gtk-9.07-31.el7_6.6.ppc64le.rpm

s390x:
ghostscript-debuginfo-9.07-31.el7_6.6.s390.rpm
ghostscript-debuginfo-9.07-31.el7_6.6.s390x.rpm
ghostscript-devel-9.07-31.el7_6.6.s390.rpm
ghostscript-devel-9.07-31.el7_6.6.s390x.rpm
ghostscript-gtk-9.07-31.el7_6.6.s390x.rpm

x86_64:
ghostscript-debuginfo-9.07-31.el7_6.6.i686.rpm
ghostscript-debuginfo-9.07-31.el7_6.6.x86_64.rpm
ghostscript-devel-9.07-31.el7_6.6.i686.rpm
ghostscript-devel-9.07-31.el7_6.6.x86_64.rpm
ghostscript-gtk-9.07-31.el7_6.6.x86_64.rpm

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7):

aarch64:
ghostscript-debuginfo-9.07-31.el7_6.6.aarch64.rpm
ghostscript-devel-9.07-31.el7_6.6.aarch64.rpm
ghostscript-gtk-9.07-31.el7_6.6.aarch64.rpm

noarch:
ghostscript-doc-9.07-31.el7_6.6.noarch.rpm

ppc64le:
ghostscript-debuginfo-9.07-31.el7_6.6.ppc64le.rpm
ghostscript-devel-9.07-31.el7_6.6.ppc64le.rpm
ghostscript-gtk-9.07-31.el7_6.6.ppc64le.rpm

s390x:
ghostscript-debuginfo-9.07-31.el7_6.6.s390.rpm
ghostscript-debuginfo-9.07-31.el7_6.6.s390x.rpm
ghostscript-devel-9.07-31.el7_6.6.s390.rpm
ghostscript-devel-9.07-31.el7_6.6.s390x.rpm
ghostscript-gtk-9.07-31.el7_6.6.s390x.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
ghostscript-9.07-31.el7_6.6.src.rpm

x86_64:
ghostscript-9.07-31.el7_6.6.i686.rpm
ghostscript-9.07-31.el7_6.6.x86_64.rpm
ghostscript-cups-9.07-31.el7_6.6.x86_64.rpm
ghostscript-debuginfo-9.07-31.el7_6.6.i686.rpm
ghostscript-debuginfo-9.07-31.el7_6.6.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 7):

noarch:
ghostscript-doc-9.07-31.el7_6.6.noarch.rpm

x86_64:
ghostscript-debuginfo-9.07-31.el7_6.6.i686.rpm
ghostscript-debuginfo-9.07-31.el7_6.6.x86_64.rpm
ghostscript-devel-9.07-31.el7_6.6.i686.rpm
ghostscript-devel-9.07-31.el7_6.6.x86_64.rpm
ghostscript-gtk-9.07-31.el7_6.6.x86_64.rpm

These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2018-15911
https://access.redhat.com/security/cve/CVE-2018-16541
https://access.redhat.com/security/cve/CVE-2018-16802
https://access.redhat.com/security/cve/CVE-2018-17183
https://access.redhat.com/security/cve/CVE-2018-17961
https://access.redhat.com/security/cve/CVE-2018-18073
https://access.redhat.com/security/cve/CVE-2018-18284
https://access.redhat.com/security/cve/CVE-2018-19134
https://access.redhat.com/security/cve/CVE-2018-19409
https://access.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2018 Red Hat, Inc.
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