SUSE SLES11 Security Update : Xen (SUSE-SU-2015:0944-1) (Venom)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2015:0944-1.
# The text itself is copyright (C) SUSE.
#

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

if (description)
{
  script_id(83859);
  script_version("2.13");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/19");

  script_cve_id("CVE-2015-3340", "CVE-2015-3456");
  script_bugtraq_id(74248, 74640);

  script_name(english:"SUSE SLES11 Security Update : Xen (SUSE-SU-2015:0944-1) (Venom)");
  script_summary(english:"Checks rpm output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote SUSE host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Xen was updated to fix two security issues and a bug :

CVE-2015-3456: A buffer overflow in the floppy drive emulation, which
could be used to carry out denial of service attacks or potential code
execution against the host. This vulnerability is also known as VENOM.

CVE-2015-3340: Xen did not initialize certain fields, which allowed
certain remote service domains to obtain sensitive information from
memory via a (1) XEN_DOMCTL_gettscinfo or (2)
XEN_SYSCTL_getdomaininfolist request.

An exception in setCPUAffinity when restoring guests. (bsc#910441)

Note that Tenable Network Security has extracted the preceding
description block directly from the SUSE 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://bugzilla.suse.com/show_bug.cgi?id=910441"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=927967"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=929339"
  );
  # https://download.suse.com/patch/finder/?keywords=8be2bb05e7093a3facd3bc07a934547b
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?cea0cf52"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2015-3340/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2015-3456/"
  );
  # https://www.suse.com/support/update/announcement/2015/suse-su-20150944-1.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?0ce10569"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Server 11 SP2 LTSS :

zypper in -t patch slessp2-xen=10685

To bring your system up-to-date, use 'zypper patch'."
  );
  script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-doc-html");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-doc-pdf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-kmp-default");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-kmp-pae");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-kmp-trace");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-tools-domU");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:11");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/04/28");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/05/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/05/27");
  script_set_attribute(attribute:"in_the_news", value:"true");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  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:"SuSE Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/SuSE/release");
if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE");
os_ver = os_ver[1];
if (! preg(pattern:"^(SLES11)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLES11", "SUSE " + os_ver);

if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu);
if (cpu >!< "i386|i486|i586|i686|x86_64") audit(AUDIT_ARCH_NOT, "i386 / i486 / i586 / i686 / x86_64", cpu);


sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES11" && (! preg(pattern:"^(2)$", string:sp))) audit(AUDIT_OS_NOT, "SLES11 SP2", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES11", sp:"2", cpu:"x86_64", reference:"xen-devel-4.1.6_08-0.11.1")) flag++;
if (rpm_check(release:"SLES11", sp:"2", cpu:"x86_64", reference:"xen-kmp-default-4.1.6_08_3.0.101_0.7.29-0.11.1")) flag++;
if (rpm_check(release:"SLES11", sp:"2", cpu:"x86_64", reference:"xen-kmp-trace-4.1.6_08_3.0.101_0.7.29-0.11.1")) flag++;
if (rpm_check(release:"SLES11", sp:"2", cpu:"x86_64", reference:"xen-libs-4.1.6_08-0.11.1")) flag++;
if (rpm_check(release:"SLES11", sp:"2", cpu:"x86_64", reference:"xen-tools-domU-4.1.6_08-0.11.1")) flag++;
if (rpm_check(release:"SLES11", sp:"2", cpu:"x86_64", reference:"xen-4.1.6_08-0.11.1")) flag++;
if (rpm_check(release:"SLES11", sp:"2", cpu:"x86_64", reference:"xen-doc-html-4.1.6_08-0.11.1")) flag++;
if (rpm_check(release:"SLES11", sp:"2", cpu:"x86_64", reference:"xen-doc-pdf-4.1.6_08-0.11.1")) flag++;
if (rpm_check(release:"SLES11", sp:"2", cpu:"x86_64", reference:"xen-libs-32bit-4.1.6_08-0.11.1")) flag++;
if (rpm_check(release:"SLES11", sp:"2", cpu:"x86_64", reference:"xen-tools-4.1.6_08-0.11.1")) flag++;
if (rpm_check(release:"SLES11", sp:"2", cpu:"x86_64", reference:"xen-kmp-pae-4.1.6_08_3.0.101_0.7.29-0.11.1")) flag++;
if (rpm_check(release:"SLES11", sp:"2", cpu:"i586", reference:"xen-devel-4.1.6_08-0.11.1")) flag++;
if (rpm_check(release:"SLES11", sp:"2", cpu:"i586", reference:"xen-kmp-default-4.1.6_08_3.0.101_0.7.29-0.11.1")) flag++;
if (rpm_check(release:"SLES11", sp:"2", cpu:"i586", reference:"xen-kmp-trace-4.1.6_08_3.0.101_0.7.29-0.11.1")) flag++;
if (rpm_check(release:"SLES11", sp:"2", cpu:"i586", reference:"xen-libs-4.1.6_08-0.11.1")) flag++;
if (rpm_check(release:"SLES11", sp:"2", cpu:"i586", reference:"xen-tools-domU-4.1.6_08-0.11.1")) flag++;
if (rpm_check(release:"SLES11", sp:"2", cpu:"i586", reference:"xen-kmp-pae-4.1.6_08_3.0.101_0.7.29-0.11.1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "Xen");
}