RHEL 3 / 4 / 5 : libxml and libxml2 (RHSA-2009:1206)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2009:1206. The text 
# itself is copyright (C) Red Hat, Inc.
#

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

if (description)
{
  script_id(40544);
  script_version("1.38");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");

  script_cve_id("CVE-2009-2414", "CVE-2009-2416");
  script_xref(name:"RHSA", value:"2009:1206");

  script_name(english:"RHEL 3 / 4 / 5 : libxml and libxml2 (RHSA-2009:1206)");
  script_summary(english:"Checks the rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Red Hat host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Updated libxml and libxml2 packages that fix multiple security issues
are now available for Red Hat Enterprise Linux 3, 4, and 5.

This update has been rated as having moderate security impact by the
Red Hat Security Response Team.

libxml is a library for parsing and manipulating XML files. A Document
Type Definition (DTD) defines the legal syntax (and also which
elements can be used) for certain types of files, such as XML files.

A stack overflow flaw was found in the way libxml processes the root
XML document element definition in a DTD. A remote attacker could
provide a specially crafted XML file, which once opened by a local,
unsuspecting user, would lead to denial of service (application
crash). (CVE-2009-2414)

Multiple use-after-free flaws were found in the way libxml parses the
Notation and Enumeration attribute types. A remote attacker could
provide a specially crafted XML file, which once opened by a local,
unsuspecting user, would lead to denial of service (application
crash). (CVE-2009-2416)

Users should upgrade to these updated packages, which contain
backported patches to resolve these issues. For Red Hat Enterprise
Linux 3, they contain backported patches for the libxml and libxml2
packages. For Red Hat Enterprise Linux 4 and 5, they contain
backported patches for the libxml2 packages. The desktop must be
restarted (log out, then log back in) for this update to take effect."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2009-2414"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2009-2416"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/errata/RHSA-2009:1206"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P");
  script_cwe_id(119, 399);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libxml");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libxml-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libxml2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libxml2-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libxml2-python");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:4");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:4.8");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:5");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:5.3");

  script_set_attribute(attribute:"vuln_publication_date", value:"2009/08/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2009/08/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2009/08/11");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2009-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Red Hat Local Security Checks");

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

  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) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat");
os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat");
os_ver = os_ver[1];
if (! preg(pattern:"^(3|4|5)([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 3.x / 4.x / 5.x", "Red Hat " + 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 ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu);

yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo)) 
{
  rhsa = "RHSA-2009:1206";
  yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
  if (!empty_or_null(yum_report))
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : yum_report 
    );
    exit(0);
  }
  else
  {
    audit_message = "affected by Red Hat security advisory " + rhsa;
    audit(AUDIT_OS_NOT, audit_message);
  }
}
else
{
  flag = 0;
  if (rpm_check(release:"RHEL3", reference:"libxml-1.8.17-9.3")) flag++;

  if (rpm_check(release:"RHEL3", reference:"libxml-devel-1.8.17-9.3")) flag++;

  if (rpm_check(release:"RHEL3", reference:"libxml2-2.5.10-15")) flag++;

  if (rpm_check(release:"RHEL3", reference:"libxml2-devel-2.5.10-15")) flag++;

  if (rpm_check(release:"RHEL3", reference:"libxml2-python-2.5.10-15")) flag++;


  if (rpm_check(release:"RHEL4", reference:"libxml2-2.6.16-12.7")) flag++;

  if (rpm_check(release:"RHEL4", reference:"libxml2-devel-2.6.16-12.7")) flag++;

  if (rpm_check(release:"RHEL4", reference:"libxml2-python-2.6.16-12.7")) flag++;


  if (rpm_check(release:"RHEL5", reference:"libxml2-2.6.26-2.1.2.8")) flag++;

  if (rpm_check(release:"RHEL5", reference:"libxml2-devel-2.6.26-2.1.2.8")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"i386", reference:"libxml2-python-2.6.26-2.1.2.8")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"libxml2-python-2.6.26-2.1.2.8")) flag++;

  if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"libxml2-python-2.6.26-2.1.2.8")) flag++;


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