Debian DSA-2662-1 : xen - several vulnerabilities

#%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-2662. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

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

if (description)
{
  script_id(66028);
  script_version("1.12");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");

  script_cve_id("CVE-2013-1917", "CVE-2013-1919");
  script_xref(name:"DSA", value:"2662");

  script_name(english:"Debian DSA-2662-1 : xen - several vulnerabilities");
  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 vulnerabilities have been discovered in the Xen hypervisor.
The Common Vulnerabilities and Exposures project identifies the
following problems :

  - CVE-2013-1917
    The SYSENTER instruction can be used by PV guests to
    accelerate system call processing. This instruction,
    however, leaves the EFLAGS register mostly unmodified.
    This can be used by malicious or buggy user space to
    cause the entire host to crash.

  - CVE-2013-1919
    Various IRQ related access control operations may not
    have the intended effect, potentially permitting a stub
    domain to grant its client domain access to an IRQ it
    doesn't have access to itself. This can be used by
    malicious or buggy stub domains kernels to mount a
    denial of service attack possibly affecting the whole
    system."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2013-1917"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2013-1919"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/squeeze/xen"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2013/dsa-2662"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the xen packages.

For the stable distribution (squeeze), these problems have been fixed
in version 4.0.1-5.9."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:N/I:N/A:C");

  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:6.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2013/04/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/04/19");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2021 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:"6.0", prefix:"libxen-dev", reference:"4.0.1-5.9")) flag++;
if (deb_check(release:"6.0", prefix:"libxenstore3.0", reference:"4.0.1-5.9")) flag++;
if (deb_check(release:"6.0", prefix:"xen-docs-4.0", reference:"4.0.1-5.9")) flag++;
if (deb_check(release:"6.0", prefix:"xen-hypervisor-4.0-amd64", reference:"4.0.1-5.9")) flag++;
if (deb_check(release:"6.0", prefix:"xen-hypervisor-4.0-i386", reference:"4.0.1-5.9")) flag++;
if (deb_check(release:"6.0", prefix:"xen-utils-4.0", reference:"4.0.1-5.9")) flag++;
if (deb_check(release:"6.0", prefix:"xenstore-utils", reference:"4.0.1-5.9")) 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");