RHEL 6 / 7 : httpd24-httpd (RHSA-2017:2483)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2017:2483. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(210279);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/11/05");

  script_cve_id(
    "CVE-2017-3167",
    "CVE-2017-3169",
    "CVE-2017-7659",
    "CVE-2017-7668",
    "CVE-2017-7679",
    "CVE-2017-9788"
  );
  script_xref(name:"RHSA", value:"2017:2483");

  script_name(english:"RHEL 6 / 7 : httpd24-httpd (RHSA-2017:2483)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates for httpd24-httpd.");
  script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as
referenced in the RHSA-2017:2483 advisory.

    The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.

    Security Fix(es):

    * It was discovered that the httpd's mod_auth_digest module did not properly initialize memory before
    using it when processing certain headers related to digest authentication. A remote attacker could
    possibly use this flaw to disclose potentially sensitive information or cause httpd child process to crash
    by sending specially crafted requests to a server. (CVE-2017-9788)

    * It was discovered that the use of httpd's ap_get_basic_auth_pw() API function outside of the
    authentication phase could lead to authentication bypass. A remote attacker could possibly use this flaw
    to bypass required authentication if the API was used incorrectly by one of the modules used by httpd.
    (CVE-2017-3167)

    * A NULL pointer dereference flaw was found in the httpd's mod_ssl module. A remote attacker could use
    this flaw to cause an httpd child process to crash if another module used by httpd called a certain API
    function during the processing of an HTTPS request. (CVE-2017-3169)

    * A NULL pointer dereference flaw was found in the mod_http2 module of httpd. A remote attacker could use
    this flaw to cause httpd child process to crash via a specially crafted HTTP/2 request. (CVE-2017-7659)

    * A buffer over-read flaw was found in the httpd's ap_find_token() function. A remote attacker could use
    this flaw to cause httpd child process to crash via a specially crafted HTTP request. (CVE-2017-7668)

    * A buffer over-read flaw was found in the httpd's mod_mime module. A user permitted to modify httpd's
    MIME configuration could use this flaw to cause httpd child process to crash. (CVE-2017-7679)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/updates/classification/#important");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1463194");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1463197");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1463199");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1463205");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1463207");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1470748");
  # https://access.redhat.com/security/data/csaf/v2/advisories/2017/rhsa-2017_2483.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?744722cf");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2017:2483");
  script_set_attribute(attribute:"solution", value:
"Update the RHEL httpd24-httpd package based on the guidance in RHSA-2017:2483.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  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-2017-7679");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(122, 125, 287, 456, 476);
  script_set_attribute(attribute:"vendor_severity", value:"Important");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/06/19");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/08/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/11/05");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:6");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:httpd24-httpd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:httpd24-httpd-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:httpd24-httpd-manual");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:httpd24-httpd-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:httpd24-mod_ldap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:httpd24-mod_proxy_html");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:httpd24-mod_session");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:httpd24-mod_ssl");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Red Hat Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}


include('rpm.inc');
include('rhel.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/RedHat/release');
if (isnull(os_release) || 'Red Hat' >!< os_release) audit(AUDIT_OS_NOT, 'Red Hat');
var os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Red Hat');
os_ver = os_ver[1];
if (!rhel_check_release_list(operator: 'ge', os_version: os_ver, rhel_versions: ['6','7'])) audit(AUDIT_OS_NOT, 'Red Hat 6.x / 7.x', 'Red Hat ' + os_ver);

if (!get_kb_item('Host/RedHat/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu && 'ppc' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Red Hat', cpu);

var constraints = [
  {
    'repo_relative_urls': [
      'content/dist/rhel/server/6/6Server/x86_64/rhscl/1/debug',
      'content/dist/rhel/server/6/6Server/x86_64/rhscl/1/os',
      'content/dist/rhel/server/6/6Server/x86_64/rhscl/1/source/SRPMS',
      'content/dist/rhel/workstation/6/6Workstation/x86_64/rhscl/1/debug',
      'content/dist/rhel/workstation/6/6Workstation/x86_64/rhscl/1/os',
      'content/dist/rhel/workstation/6/6Workstation/x86_64/rhscl/1/source/SRPMS',
      'content/eus/rhel/server/6/6.2/x86_64/rhscl/1/debug',
      'content/eus/rhel/server/6/6.2/x86_64/rhscl/1/os',
      'content/eus/rhel/server/6/6.2/x86_64/rhscl/1/source/SRPMS',
      'content/eus/rhel/server/6/6.3/x86_64/rhscl/1/debug',
      'content/eus/rhel/server/6/6.3/x86_64/rhscl/1/os',
      'content/eus/rhel/server/6/6.3/x86_64/rhscl/1/source/SRPMS',
      'content/eus/rhel/server/6/6.4/x86_64/rhscl/1/debug',
      'content/eus/rhel/server/6/6.4/x86_64/rhscl/1/os',
      'content/eus/rhel/server/6/6.4/x86_64/rhscl/1/source/SRPMS',
      'content/eus/rhel/server/6/6.5/x86_64/rhscl/1/debug',
      'content/eus/rhel/server/6/6.5/x86_64/rhscl/1/os',
      'content/eus/rhel/server/6/6.5/x86_64/rhscl/1/source/SRPMS',
      'content/eus/rhel/server/6/6.6/x86_64/rhscl/1/debug',
      'content/eus/rhel/server/6/6.6/x86_64/rhscl/1/os',
      'content/eus/rhel/server/6/6.6/x86_64/rhscl/1/source/SRPMS',
      'content/eus/rhel/server/6/6.7/x86_64/rhscl/1/debug',
      'content/eus/rhel/server/6/6.7/x86_64/rhscl/1/os',
      'content/eus/rhel/server/6/6.7/x86_64/rhscl/1/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'httpd24-httpd-2.4.25-9.el6.1', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd24-httpd-devel-2.4.25-9.el6.1', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd24-httpd-manual-2.4.25-9.el6.1', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd24-httpd-tools-2.4.25-9.el6.1', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd24-mod_ldap-2.4.25-9.el6.1', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd24-mod_proxy_html-2.4.25-9.el6.1', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'httpd24-mod_session-2.4.25-9.el6.1', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd24-mod_ssl-2.4.25-9.el6.1', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'}
    ]
  },
  {
    'repo_relative_urls': [
      'content/dist/rhel/server/7/7Server/x86_64/rhscl/1/debug',
      'content/dist/rhel/server/7/7Server/x86_64/rhscl/1/os',
      'content/dist/rhel/server/7/7Server/x86_64/rhscl/1/source/SRPMS',
      'content/dist/rhel/workstation/7/7Workstation/x86_64/rhscl/1/debug',
      'content/dist/rhel/workstation/7/7Workstation/x86_64/rhscl/1/os',
      'content/dist/rhel/workstation/7/7Workstation/x86_64/rhscl/1/source/SRPMS',
      'content/eus/rhel/server/7/7.1/x86_64/rhscl/1/debug',
      'content/eus/rhel/server/7/7.1/x86_64/rhscl/1/os',
      'content/eus/rhel/server/7/7.1/x86_64/rhscl/1/source/SRPMS',
      'content/eus/rhel/server/7/7.2/x86_64/rhscl/1/debug',
      'content/eus/rhel/server/7/7.2/x86_64/rhscl/1/os',
      'content/eus/rhel/server/7/7.2/x86_64/rhscl/1/source/SRPMS',
      'content/eus/rhel/server/7/7.3/x86_64/rhscl/1/debug',
      'content/eus/rhel/server/7/7.3/x86_64/rhscl/1/os',
      'content/eus/rhel/server/7/7.3/x86_64/rhscl/1/source/SRPMS',
      'content/eus/rhel/server/7/7.4/x86_64/rhscl/1/debug',
      'content/eus/rhel/server/7/7.4/x86_64/rhscl/1/os',
      'content/eus/rhel/server/7/7.4/x86_64/rhscl/1/source/SRPMS',
      'content/eus/rhel/server/7/7.5/x86_64/rhscl/1/debug',
      'content/eus/rhel/server/7/7.5/x86_64/rhscl/1/os',
      'content/eus/rhel/server/7/7.5/x86_64/rhscl/1/source/SRPMS',
      'content/eus/rhel/server/7/7.6/x86_64/rhscl/1/debug',
      'content/eus/rhel/server/7/7.6/x86_64/rhscl/1/os',
      'content/eus/rhel/server/7/7.6/x86_64/rhscl/1/source/SRPMS',
      'content/eus/rhel/server/7/7.7/x86_64/rhscl/1/debug',
      'content/eus/rhel/server/7/7.7/x86_64/rhscl/1/os',
      'content/eus/rhel/server/7/7.7/x86_64/rhscl/1/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'httpd24-httpd-2.4.25-9.el7.1', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd24-httpd-devel-2.4.25-9.el7.1', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd24-httpd-manual-2.4.25-9.el7.1', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd24-httpd-tools-2.4.25-9.el7.1', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd24-mod_ldap-2.4.25-9.el7.1', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd24-mod_proxy_html-2.4.25-9.el7.1', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'httpd24-mod_session-2.4.25-9.el7.1', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd24-mod_ssl-2.4.25-9.el7.1', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'}
    ]
  }
];

var applicable_repo_urls = rhel_determine_applicable_repository_urls(constraints:constraints);
if(applicable_repo_urls == RHEL_REPOS_NO_OVERLAP_MESSAGE) exit(0, RHEL_REPO_NOT_ENABLED);

var flag = 0;
foreach var constraint_array ( constraints ) {
  var repo_relative_urls = NULL;
  if (!empty_or_null(constraint_array['repo_relative_urls'])) repo_relative_urls = constraint_array['repo_relative_urls'];
  foreach var pkg ( constraint_array['pkgs'] ) {
    var reference = NULL;
    var _release = NULL;
    var sp = NULL;
    var _cpu = NULL;
    var el_string = NULL;
    var rpm_spec_vers_cmp = NULL;
    var epoch = NULL;
    var allowmaj = NULL;
    var exists_check = NULL;
    var cves = NULL;
    if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];
    if (!empty_or_null(pkg['release'])) _release = 'RHEL' + pkg['release'];
    if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
    if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];
    if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];
    if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
    if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];
    if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];
    if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
    if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
    if (reference &&
        _release &&
        rhel_decide_repo_relative_url_check(required_repo_url_list:repo_relative_urls) &&
        (applicable_repo_urls || (!exists_check || rpm_exists(release:_release, rpm:exists_check))) &&
        rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj, cves:cves)) flag++;
  }
}

if (flag)
{
  var extra = NULL;
  if (isnull(applicable_repo_urls) || !applicable_repo_urls) extra = rpm_report_get() + redhat_report_repo_caveat();
  else extra = rpm_report_get();
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : extra
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'httpd24-httpd / httpd24-httpd-devel / httpd24-httpd-manual / etc');
}