Sigurnosni nedostaci programskog paketa ghostscript

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by - 18. prosinca 2018.0

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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

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

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

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

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

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

Red Hat Enterprise Linux Workstation (v. 7):

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

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

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

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