Debian DLA-1363-1 : ghostscript security update

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-1363-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(109347);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/10/24");

  script_cve_id("CVE-2018-10194");

  script_name(english:"Debian DLA-1363-1 : ghostscript security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"It was discovered that the set_text_distance function in
base/gdevpdts.c in the pdfwrite component in Ghostscript does not
prevent overflows in text-positioning calculation, which allows remote
attackers to cause a denial of service (application crash) or possibly
have unspecified other impact via a crafted PDF document.

For Debian 7 'Wheezy', these problems have been fixed in version
9.05~dfsg-6.3+deb7u8.

We recommend that you upgrade your ghostscript packages.

NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA security advisory. Tenable has attempted
to automatically clean and format it as much as possible without
introducing additional issues.");
  script_set_attribute(attribute:"see_also", value:"https://lists.debian.org/debian-lts-announce/2018/04/msg00028.html");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/wheezy/ghostscript");
  script_set_attribute(attribute:"solution", value:
"Upgrade the affected 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:"cvss_score_source", value:"CVE-2018-10194");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/04/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/04/26");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ghostscript");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ghostscript-cups");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ghostscript-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ghostscript-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ghostscript-x");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libgs-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libgs9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libgs9-common");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Debian Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2018-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"7.0", prefix:"ghostscript", reference:"9.05~dfsg-6.3+deb7u8")) flag++;
if (deb_check(release:"7.0", prefix:"ghostscript-cups", reference:"9.05~dfsg-6.3+deb7u8")) flag++;
if (deb_check(release:"7.0", prefix:"ghostscript-dbg", reference:"9.05~dfsg-6.3+deb7u8")) flag++;
if (deb_check(release:"7.0", prefix:"ghostscript-doc", reference:"9.05~dfsg-6.3+deb7u8")) flag++;
if (deb_check(release:"7.0", prefix:"ghostscript-x", reference:"9.05~dfsg-6.3+deb7u8")) flag++;
if (deb_check(release:"7.0", prefix:"libgs-dev", reference:"9.05~dfsg-6.3+deb7u8")) flag++;
if (deb_check(release:"7.0", prefix:"libgs9", reference:"9.05~dfsg-6.3+deb7u8")) flag++;
if (deb_check(release:"7.0", prefix:"libgs9-common", reference:"9.05~dfsg-6.3+deb7u8")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");