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nessusThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.ORACLELINUX_ELSA-2018-3650.NASL
HistoryNov 27, 2018 - 12:00 a.m.

Oracle Linux 7 : ghostscript (ELSA-2018-3650)

2018-11-2700:00:00
This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
13

6.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

0.005 Low

EPSS

Percentile

76.0%

From Red Hat Security Advisory 2018:3650 :

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: .tempfile file permission issues (699657) (CVE-2018-15908)

  • ghostscript: shading_param incomplete type checking (699660) (CVE-2018-15909)

  • ghostscript: missing type check in type checker (699659) (CVE-2018-16511)

  • ghostscript: incorrect access checking in temp file handling to disclose contents of files (699658) (CVE-2018-16539)

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-2018-15908.

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2018:3650 and 
# Oracle Linux Security Advisory ELSA-2018-3650 respectively.
#

include("compat.inc");

if (description)
{
  script_id(119166);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/07/08");

  script_cve_id("CVE-2018-15908", "CVE-2018-15909", "CVE-2018-16511", "CVE-2018-16539");
  script_xref(name:"RHSA", value:"2018:3650");

  script_name(english:"Oracle Linux 7 : ghostscript (ELSA-2018-3650)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis",
    value:"The remote Oracle Linux host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description",
    value:
"From Red Hat Security Advisory 2018:3650 :

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: .tempfile file permission issues (699657)
(CVE-2018-15908)

* ghostscript: shading_param incomplete type checking (699660)
(CVE-2018-15909)

* ghostscript: missing type check in type checker (699659)
(CVE-2018-16511)

* ghostscript: incorrect access checking in temp file handling to
disclose contents of files (699658) (CVE-2018-16539)

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-2018-15908."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/el-errata/2018-November/008284.html"
  );
  script_set_attribute(
    attribute:"solution",
    value:"Update the affected ghostscript packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:ghostscript");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:ghostscript-cups");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:ghostscript-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:ghostscript-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:ghostscript-gtk");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:7");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/08/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/11/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/11/27");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Oracle Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/OracleLinux", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/OracleLinux")) audit(AUDIT_OS_NOT, "Oracle Linux");
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:release)) audit(AUDIT_OS_NOT, "Oracle Linux");
os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Oracle Linux");
os_ver = os_ver[1];
if (! preg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Oracle Linux 7", "Oracle Linux " + os_ver);

if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Oracle Linux", cpu);
if ("x86_64" >!< cpu) audit(AUDIT_ARCH_NOT, "x86_64", cpu);

flag = 0;
if (rpm_check(release:"EL7", cpu:"x86_64", reference:"ghostscript-9.07-31.el7_6.1")) flag++;
if (rpm_check(release:"EL7", cpu:"x86_64", reference:"ghostscript-cups-9.07-31.el7_6.1")) flag++;
if (rpm_check(release:"EL7", cpu:"x86_64", reference:"ghostscript-devel-9.07-31.el7_6.1")) flag++;
if (rpm_check(release:"EL7", cpu:"x86_64", reference:"ghostscript-doc-9.07-31.el7_6.1")) flag++;
if (rpm_check(release:"EL7", cpu:"x86_64", reference:"ghostscript-gtk-9.07-31.el7_6.1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "ghostscript / ghostscript-cups / ghostscript-devel / etc");
}
VendorProductVersionCPE
oraclelinuxghostscriptp-cpe:/a:oracle:linux:ghostscript
oraclelinuxghostscript-cupsp-cpe:/a:oracle:linux:ghostscript-cups
oraclelinuxghostscript-develp-cpe:/a:oracle:linux:ghostscript-devel
oraclelinuxghostscript-docp-cpe:/a:oracle:linux:ghostscript-doc
oraclelinuxghostscript-gtkp-cpe:/a:oracle:linux:ghostscript-gtk
oraclelinux7cpe:/o:oracle:linux:7

6.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

0.005 Low

EPSS

Percentile

76.0%