Debian DSA-3181-1 : xen - 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 DSA-3181. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

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

if (description)
{
  script_id(81748);
  script_version("1.9");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");

  script_cve_id("CVE-2015-2044", "CVE-2015-2045", "CVE-2015-2151");
  script_bugtraq_id(72954, 72955, 73015);
  script_xref(name:"DSA", value:"3181");

  script_name(english:"Debian DSA-3181-1 : xen - 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:
"Multiple security issues have been found in the Xen virtualisation
solution :

  - CVE-2015-2044
    Information leak via x86 system device emulation.

  - CVE-2015-2045
    Information leak in the HYPERVISOR_xen_version()
    hypercall.

  - CVE-2015-2151
    Missing input sanitising in the x86 emulator could
    result in information disclosure, denial of service or
    potentially privilege escalation.

In addition the Xen developers reported an unfixable limitation in the
handling of non-standard PCI devices. Please refer to for further
information."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2015-2044"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2015-2045"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2015-2151"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/wheezy/xen"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2015/dsa-3181"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the xen packages.

For the stable distribution (wheezy), these problems have been fixed
in version 4.1.4-3+deb7u5."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xen");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2015/03/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/03/11");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2015-2021 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:"7.0", prefix:"libxen-4.1", reference:"4.1.4-3+deb7u5")) flag++;
if (deb_check(release:"7.0", prefix:"libxen-dev", reference:"4.1.4-3+deb7u5")) flag++;
if (deb_check(release:"7.0", prefix:"libxen-ocaml", reference:"4.1.4-3+deb7u5")) flag++;
if (deb_check(release:"7.0", prefix:"libxen-ocaml-dev", reference:"4.1.4-3+deb7u5")) flag++;
if (deb_check(release:"7.0", prefix:"libxenstore3.0", reference:"4.1.4-3+deb7u5")) flag++;
if (deb_check(release:"7.0", prefix:"xen-docs-4.1", reference:"4.1.4-3+deb7u5")) flag++;
if (deb_check(release:"7.0", prefix:"xen-hypervisor-4.1-amd64", reference:"4.1.4-3+deb7u5")) flag++;
if (deb_check(release:"7.0", prefix:"xen-hypervisor-4.1-i386", reference:"4.1.4-3+deb7u5")) flag++;
if (deb_check(release:"7.0", prefix:"xen-system-amd64", reference:"4.1.4-3+deb7u5")) flag++;
if (deb_check(release:"7.0", prefix:"xen-system-i386", reference:"4.1.4-3+deb7u5")) flag++;
if (deb_check(release:"7.0", prefix:"xen-utils-4.1", reference:"4.1.4-3+deb7u5")) flag++;
if (deb_check(release:"7.0", prefix:"xen-utils-common", reference:"4.1.4-3+deb7u5")) flag++;
if (deb_check(release:"7.0", prefix:"xenstore-utils", reference:"4.1.4-3+deb7u5")) flag++;

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