Scientific Linux Security Update : libxml2 on SL6.x, SL7.x i386/x86_64 (20160623)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text is (C) Scientific Linux.
#

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

if (description)
{
  script_id(91808);
  script_version("2.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");

  script_cve_id("CVE-2016-1762", "CVE-2016-1833", "CVE-2016-1834", "CVE-2016-1835", "CVE-2016-1836", "CVE-2016-1837", "CVE-2016-1838", "CVE-2016-1839", "CVE-2016-1840", "CVE-2016-3627", "CVE-2016-3705", "CVE-2016-4447", "CVE-2016-4448", "CVE-2016-4449");

  script_name(english:"Scientific Linux Security Update : libxml2 on SL6.x, SL7.x i386/x86_64 (20160623)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Scientific Linux host is missing one or more security
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Security Fix(es) :

A heap-based buffer overflow flaw was found in the way libxml2 parsed
certain crafted XML input. A remote attacker could provide a specially
crafted XML file that, when opened in an application linked against
libxml2, would cause the application to crash or execute arbitrary
code with the permissions of the user running the application.
(CVE-2016-1834, CVE-2016-1840)

Multiple denial of service flaws were found in libxml2. A remote
attacker could provide a specially crafted XML file that, when
processed by an application using libxml2, could cause that
application to crash. (CVE-2016-1762, CVE-2016-1833, CVE-2016-1835,
CVE-2016-1836, CVE-2016-1837, CVE-2016-1838, CVE-2016-1839,
CVE-2016-3627, CVE-2016-3705, CVE-2016-4447, CVE-2016-4448,
CVE-2016-4449)"
  );
  # https://listserv.fnal.gov/scripts/wa.exe?A2=ind1606&L=scientific-linux-errata&F=&S=&P=6600
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?f06629c4"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2016-4448");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libxml2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libxml2-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libxml2-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libxml2-python");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libxml2-static");
  script_set_attribute(attribute:"cpe", value:"x-cpe:/o:fermilab:scientific_linux");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/03/24");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/06/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/06/24");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Scientific Linux Local Security Checks");

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

  exit(0);
}


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

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Scientific Linux " >!< release) audit(AUDIT_HOST_NOT, "running Scientific Linux");
os_ver = pregmatch(pattern: "Scientific Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Scientific Linux");
os_ver = os_ver[1];
if (! preg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Scientific Linux 7.x", "Scientific Linux " + os_ver);
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu >!< "x86_64" && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Scientific Linux", cpu);


flag = 0;
if (rpm_check(release:"SL6", reference:"libxml2-2.7.6-21.el6_8.1", el_string:"el6_8")) flag++;
if (rpm_check(release:"SL6", reference:"libxml2-debuginfo-2.7.6-21.el6_8.1", el_string:"el6_8")) flag++;
if (rpm_check(release:"SL6", reference:"libxml2-devel-2.7.6-21.el6_8.1", el_string:"el6_8")) flag++;
if (rpm_check(release:"SL6", reference:"libxml2-python-2.7.6-21.el6_8.1", el_string:"el6_8")) flag++;
if (rpm_check(release:"SL6", reference:"libxml2-static-2.7.6-21.el6_8.1", el_string:"el6_8")) flag++;

if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libxml2-2.9.1-6.el7_2.3", el_string:"el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libxml2-debuginfo-2.9.1-6.el7_2.3", el_string:"el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libxml2-devel-2.9.1-6.el7_2.3", el_string:"el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libxml2-python-2.9.1-6.el7_2.3", el_string:"el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libxml2-static-2.9.1-6.el7_2.3", el_string:"el7_2")) flag++;


if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libxml2 / libxml2-debuginfo / libxml2-devel / libxml2-python / etc");
}