openSUSE Security Update : libheimdal (openSUSE-2018-876)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update openSUSE-2018-876.
#
# The text description of this plugin is (C) SUSE LLC.
#

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

if (description)
{
  script_id(111811);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/19");

  script_cve_id("CVE-2017-17439");

  script_name(english:"openSUSE Security Update : libheimdal (openSUSE-2018-876)");
  script_summary(english:"Check for the openSUSE-2018-876 patch");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote openSUSE host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update for libheimdal to version 7.5.0 fixes the following 
issues :

The following security vulnerability was fixed :

  - CVE-2017-17439: Fixed a remote denial of service
    vulnerability through which remote unauthenticated
    attackers were able to crash the KDC by sending a
    crafted UDP packet containing empty data fields for
    client name or realm (boo#1071675)

The following other bugs were fixed :

  - Override the build date (boo#1047218)

  - Use constant hostname (boo#1084909)

  - Handle long input lines when reloading database dumps

  - In pre-forked mode, correctly clear the process ids of
    exited children, allowing new child processes to replace
    the old.

  - Fixed incorrect KDC response when no-cross realm TGT
    exists, allowing client requests to fail quickly rather
    than time out after trying to get a correct answer from
    each KDC."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1047218"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1071675"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1084909"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected libheimdal packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libheimdal");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libheimdal-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libheimdal-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libheimdal-devel");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:42.3");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/08/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/08/17");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2021 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/SuSE/release", "Host/SuSE/rpm-list", "Host/cpu");

  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, "openSUSE");
if (release !~ "^(SUSE42\.3)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "42.3", release);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

ourarch = get_kb_item("Host/cpu");
if (!ourarch) audit(AUDIT_UNKNOWN_ARCH);
if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch);

flag = 0;

if ( rpm_check(release:"SUSE42.3", reference:"libheimdal-7.5.0-9.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"libheimdal-debuginfo-7.5.0-9.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"libheimdal-debugsource-7.5.0-9.1") ) flag++;
if ( rpm_check(release:"SUSE42.3", reference:"libheimdal-devel-7.5.0-9.1") ) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libheimdal / libheimdal-debuginfo / libheimdal-debugsource / etc");
}