Debian DSA-4565-1 : intel-microcode - security update

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-4565. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(130983);
  script_version("1.5");
  script_cvs_date("Date: 2019/12/13");

  script_cve_id("CVE-2019-11135", "CVE-2019-11139");
  script_xref(name:"DSA", value:"4565");

  script_name(english:"Debian DSA-4565-1 : intel-microcode - security update");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update ships updated CPU microcode for some types of Intel CPUs.
In particular it provides mitigations for the TAA (TSX Asynchronous
Abort) vulnerability. For affected CPUs, to fully mitigate the
vulnerability it is also necessary to update the Linux kernel packages
as released in DSA 4564-1."
  );
  # https://security-tracker.debian.org/tracker/source-package/intel-microcode
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?019586d4"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/stretch/intel-microcode"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/buster/intel-microcode"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2019/dsa-4565"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the intel-microcode packages.

For the oldstable distribution (stretch), these problems have been
fixed in version 3.20191112.1~deb9u1.

For the stable distribution (buster), these problems have been fixed
in version 3.20191112.1~deb10u1."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N");
  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:L/UI:N/S:C/C:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-11135");
  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:debian:debian_linux:intel-microcode");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:10.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/11/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/11/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/11/14");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Debian Local Security Checks");

  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:"10.0", prefix:"intel-microcode", reference:"3.20191112.1~deb10u1")) flag++;
if (deb_check(release:"9.0", prefix:"intel-microcode", reference:"3.20191112.1~deb9u1")) flag++;

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