Debian DSA-4288-1 : ghostscript - security update

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-4288. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(117369);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/08/08");

  script_cve_id(
    "CVE-2018-15908",
    "CVE-2018-15910",
    "CVE-2018-15911",
    "CVE-2018-16511",
    "CVE-2018-16513",
    "CVE-2018-16539",
    "CVE-2018-16540",
    "CVE-2018-16541",
    "CVE-2018-16542",
    "CVE-2018-16543",
    "CVE-2018-16585"
  );
  script_xref(name:"DSA", value:"4288");

  script_name(english:"Debian DSA-4288-1 : ghostscript - security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security-related update.");
  script_set_attribute(attribute:"description", value:
"Tavis Ormandy discovered multiple vulnerabilites in Ghostscript, an
interpreter for the PostScript language, which could result in denial
of service, the creation of files or the execution of arbitrary code
if a malformed Postscript file is processed (despite the dSAFER
sandbox being enabled).");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/ghostscript");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/stretch/ghostscript");
  script_set_attribute(attribute:"see_also", value:"https://www.debian.org/security/2018/dsa-4288");
  script_set_attribute(attribute:"solution", value:
"Upgrade the ghostscript packages.

For the stable distribution (stretch), these problems have been fixed
in version 9.20~dfsg-3.2+deb9u4.");
  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-2018-16585");

  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:"2018/09/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/09/10");

  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:"cpe:/o:debian:debian_linux:9.0");
  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:"9.0", prefix:"ghostscript", reference:"9.20~dfsg-3.2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"ghostscript-dbg", reference:"9.20~dfsg-3.2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"ghostscript-doc", reference:"9.20~dfsg-3.2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"ghostscript-x", reference:"9.20~dfsg-3.2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"libgs-dev", reference:"9.20~dfsg-3.2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"libgs9", reference:"9.20~dfsg-3.2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"libgs9-common", reference:"9.20~dfsg-3.2+deb9u4")) 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");