Sigurnosni nedostaci programskog paketa ghostscript

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by - 16. listopada 2018.0

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Red Hat Security Advisory

Synopsis: Important: ghostscript security update
Advisory ID: RHSA-2018:2918-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2018:2918
Issue date: 2018-10-16
CVE Names: CVE-2018-10194 CVE-2018-15910 CVE-2018-16509
CVE-2018-16542
=====================================================================

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):

* It was discovered that the ghostscript /invalidaccess checks fail under
certain conditions. An attacker could possibly exploit this to bypass the
– -dSAFER protection and, for example, execute arbitrary shell commands via a
specially crafted PostScript document. (CVE-2018-16509)

* ghostscript: LockDistillerParams type confusion (699656) (CVE-2018-15910)

* ghostscript: .definemodifiedfont memory corruption if /typecheck is
handled (699668) (CVE-2018-16542)

* ghostscript: Stack-based out-of-bounds write in pdf_set_text_matrix
function in gdevpdts.c (CVE-2018-10194)

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-2018-16509, CVE-2018-15910, and CVE-2018-16542.

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/):

1569108 – CVE-2018-10194 ghostscript: Stack-based out-of-bounds write in pdf_set_text_matrix function in gdevpdts.c
1619748 – CVE-2018-16509 ghostscript: /invalidaccess bypass after failed restore (699654)
1619751 – CVE-2018-15910 ghostscript: LockDistillerParams type confusion (699656)
1621363 – CVE-2018-16542 ghostscript: .definemodifiedfont memory corruption if /typecheck is handled (699668)

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
ghostscript-9.07-29.el7_5.2.src.rpm

x86_64:
ghostscript-9.07-29.el7_5.2.i686.rpm
ghostscript-9.07-29.el7_5.2.x86_64.rpm
ghostscript-cups-9.07-29.el7_5.2.x86_64.rpm
ghostscript-debuginfo-9.07-29.el7_5.2.i686.rpm
ghostscript-debuginfo-9.07-29.el7_5.2.x86_64.rpm

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

noarch:
ghostscript-doc-9.07-29.el7_5.2.noarch.rpm

x86_64:
ghostscript-debuginfo-9.07-29.el7_5.2.i686.rpm
ghostscript-debuginfo-9.07-29.el7_5.2.x86_64.rpm
ghostscript-devel-9.07-29.el7_5.2.i686.rpm
ghostscript-devel-9.07-29.el7_5.2.x86_64.rpm
ghostscript-gtk-9.07-29.el7_5.2.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
ghostscript-9.07-29.el7_5.2.src.rpm

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

noarch:
ghostscript-doc-9.07-29.el7_5.2.noarch.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
ghostscript-9.07-29.el7_5.2.src.rpm

ppc64:
ghostscript-9.07-29.el7_5.2.ppc.rpm
ghostscript-9.07-29.el7_5.2.ppc64.rpm
ghostscript-cups-9.07-29.el7_5.2.ppc64.rpm
ghostscript-debuginfo-9.07-29.el7_5.2.ppc.rpm
ghostscript-debuginfo-9.07-29.el7_5.2.ppc64.rpm

ppc64le:
ghostscript-9.07-29.el7_5.2.ppc64le.rpm
ghostscript-cups-9.07-29.el7_5.2.ppc64le.rpm
ghostscript-debuginfo-9.07-29.el7_5.2.ppc64le.rpm

s390x:
ghostscript-9.07-29.el7_5.2.s390.rpm
ghostscript-9.07-29.el7_5.2.s390x.rpm
ghostscript-cups-9.07-29.el7_5.2.s390x.rpm
ghostscript-debuginfo-9.07-29.el7_5.2.s390.rpm
ghostscript-debuginfo-9.07-29.el7_5.2.s390x.rpm

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

Source:
ghostscript-9.07-29.el7_5.2.src.rpm

aarch64:
ghostscript-9.07-29.el7_5.2.aarch64.rpm
ghostscript-cups-9.07-29.el7_5.2.aarch64.rpm
ghostscript-debuginfo-9.07-29.el7_5.2.aarch64.rpm

ppc64le:
ghostscript-9.07-29.el7_5.2.ppc64le.rpm
ghostscript-cups-9.07-29.el7_5.2.ppc64le.rpm
ghostscript-debuginfo-9.07-29.el7_5.2.ppc64le.rpm

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

noarch:
ghostscript-doc-9.07-29.el7_5.2.noarch.rpm

ppc64:
ghostscript-debuginfo-9.07-29.el7_5.2.ppc.rpm
ghostscript-debuginfo-9.07-29.el7_5.2.ppc64.rpm
ghostscript-devel-9.07-29.el7_5.2.ppc.rpm
ghostscript-devel-9.07-29.el7_5.2.ppc64.rpm
ghostscript-gtk-9.07-29.el7_5.2.ppc64.rpm

ppc64le:
ghostscript-debuginfo-9.07-29.el7_5.2.ppc64le.rpm
ghostscript-devel-9.07-29.el7_5.2.ppc64le.rpm
ghostscript-gtk-9.07-29.el7_5.2.ppc64le.rpm

s390x:
ghostscript-debuginfo-9.07-29.el7_5.2.s390.rpm
ghostscript-debuginfo-9.07-29.el7_5.2.s390x.rpm
ghostscript-devel-9.07-29.el7_5.2.s390.rpm
ghostscript-devel-9.07-29.el7_5.2.s390x.rpm
ghostscript-gtk-9.07-29.el7_5.2.s390x.rpm

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

aarch64:
ghostscript-debuginfo-9.07-29.el7_5.2.aarch64.rpm
ghostscript-devel-9.07-29.el7_5.2.aarch64.rpm
ghostscript-gtk-9.07-29.el7_5.2.aarch64.rpm

noarch:
ghostscript-doc-9.07-29.el7_5.2.noarch.rpm

ppc64le:
ghostscript-debuginfo-9.07-29.el7_5.2.ppc64le.rpm
ghostscript-devel-9.07-29.el7_5.2.ppc64le.rpm
ghostscript-gtk-9.07-29.el7_5.2.ppc64le.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
ghostscript-9.07-29.el7_5.2.src.rpm

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

noarch:
ghostscript-doc-9.07-29.el7_5.2.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-2018-10194
https://access.redhat.com/security/cve/CVE-2018-15910
https://access.redhat.com/security/cve/CVE-2018-16509
https://access.redhat.com/security/cve/CVE-2018-16542
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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