Vulnerabilities > CVE-2018-13457 - NULL Pointer Dereference vulnerability in Nagios Core

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory FEDORA-2019-0b44528ff1.
#

include("compat.inc");

if (description)
{
  script_id(121442);
  script_version("1.3");
  script_cvs_date("Date: 2019/09/23 11:21:09");

  script_cve_id("CVE-2016-8641", "CVE-2018-13441", "CVE-2018-13457", "CVE-2018-13458", "CVE-2018-18245");
  script_xref(name:"FEDORA", value:"2019-0b44528ff1");

  script_name(english:"Fedora 28 : nagios (2019-0b44528ff1)");
  script_summary(english:"Checks rpm output for the updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Fedora host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Incorporate many fixes from Justin Paulsen <[email protected]>
THANKS!!!

----

Updates to nagios-4.4.2 which is a major update. Fixes CVE's
CVE-2018-13441 CVE-2016-8641

----

Remove section which unset nagios Fix BZ#1568273

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora update system website.
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://bodhi.fedoraproject.org/updates/FEDORA-2019-0b44528ff1"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected nagios package."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/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:L/AC:L/PR:L/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:"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:fedoraproject:fedora:nagios");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:28");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/07/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/01/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/01/30");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Fedora Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/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/RedHat/release");
if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = pregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! preg(pattern:"^28([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 28", "Fedora " + 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$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);


flag = 0;
if (rpm_check(release:"FC28", reference:"nagios-4.4.3-1.fc28")) 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, "nagios");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update openSUSE-2020-500.
#
# The text description of this plugin is (C) SUSE LLC.
#

include("compat.inc");

if (description)
{
  script_id(135448);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/04/16");

  script_cve_id("CVE-2018-13441", "CVE-2018-13457", "CVE-2018-13458", "CVE-2018-18245", "CVE-2019-3698");

  script_name(english:"openSUSE Security Update : nagios (openSUSE-2020-500)");
  script_summary(english:"Check for the openSUSE-2020-500 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 nagios to version 4.4.5 fixes the following issues :

  - CVE-2019-3698: Symbolic link following vulnerability in
    the cronjob allows local attackers to cause cause DoS or
    potentially escalate privileges. (boo#1156309)

  - CVE-2018-18245: Fixed XSS vulnerability in Alert Summary
    report (boo#1119832)

  - CVE-2018-13441, CVE-2018-13458, CVE-2018-13457: Fixed a
    few denial of service vulnerabilities caused by NULL
    pointer dereference (boo#1101293, boo#1101289,
    boo#1101290)."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1028975"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1119832"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1156309"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected nagios packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/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:L/AC:H/PR:L/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:"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:novell:opensuse:nagios");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:nagios-contrib");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:nagios-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:nagios-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:nagios-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:nagios-theme-exfoliation");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:nagios-www");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:nagios-www-dch");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:nagios-www-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:15.1");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/07/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/04/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/04/14");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2020 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 !~ "^(SUSE15\.1)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "15.1", 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 !~ "^(x86_64)$") audit(AUDIT_ARCH_NOT, "x86_64", ourarch);

flag = 0;

if ( rpm_check(release:"SUSE15.1", reference:"nagios-4.4.5-lp151.5.4.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"nagios-contrib-4.4.5-lp151.5.4.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"nagios-debuginfo-4.4.5-lp151.5.4.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"nagios-debugsource-4.4.5-lp151.5.4.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"nagios-devel-4.4.5-lp151.5.4.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"nagios-theme-exfoliation-4.4.5-lp151.5.4.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"nagios-www-4.4.5-lp151.5.4.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"nagios-www-dch-4.4.5-lp151.5.4.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"nagios-www-debuginfo-4.4.5-lp151.5.4.1") ) 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, "nagios / nagios-contrib / nagios-debuginfo / nagios-debugsource / etc");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory FEDORA-2019-376ecc221c.
#

include("compat.inc");

if (description)
{
  script_id(121443);
  script_version("1.3");
  script_cvs_date("Date: 2019/09/23 11:21:10");

  script_cve_id("CVE-2016-8641", "CVE-2018-13441", "CVE-2018-13457", "CVE-2018-13458", "CVE-2018-18245");
  script_xref(name:"FEDORA", value:"2019-376ecc221c");

  script_name(english:"Fedora 29 : nagios (2019-376ecc221c)");
  script_summary(english:"Checks rpm output for the updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Fedora host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Incorporate many fixes from Justin Paulsen <[email protected]>
THANKS!!!

----

Updates to nagios-4.4.2 which is a major update. Fixes CVE's
CVE-2018-13441 CVE-2016-8641

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora update system website.
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://bodhi.fedoraproject.org/updates/FEDORA-2019-376ecc221c"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected nagios package."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/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:L/AC:L/PR:L/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:"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:fedoraproject:fedora:nagios");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:29");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/07/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/01/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/01/30");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Fedora Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/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/RedHat/release");
if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = pregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! preg(pattern:"^29([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 29", "Fedora " + 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$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);


flag = 0;
if (rpm_check(release:"FC29", reference:"nagios-4.4.3-1.fc29")) 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, "nagios");
}