RHEL 9 : haproxy (RHSA-2023:1978)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2023:1978. The text
# itself is copyright (C) Red Hat, Inc.
##

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

if (description)
{
  script_id(174727);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/26");

  script_cve_id("CVE-2023-0056", "CVE-2023-25725");
  script_xref(name:"RHSA", value:"2023:1978");

  script_name(english:"RHEL 9 : haproxy (RHSA-2023:1978)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates for haproxy.");
  script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 9 host has a package installed that is affected by multiple vulnerabilities as
referenced in the RHSA-2023:1978 advisory.

  - An uncontrolled resource consumption vulnerability was discovered in HAProxy which could crash the
    service. This issue could allow an authenticated remote attacker to run a specially crafted malicious
    server in an OpenShift cluster. The biggest impact is to availability. (CVE-2023-0056)

  - HAProxy before 2.7.3 may allow a bypass of access control because HTTP/1 headers are inadvertently lost in
    some situations, aka request smuggling. The HTTP header parsers in HAProxy may accept empty header field
    names, which could be used to truncate the list of HTTP headers and thus make some headers disappear after
    being parsed and processed for HTTP/1.0 and HTTP/1.1. For HTTP/2 and HTTP/3, the impact is limited because
    the headers disappear before being parsed and processed, as if they had not been sent by the client. The
    fixed versions are 2.7.3, 2.6.9, 2.5.12, 2.4.22, 2.2.29, and 2.0.31. (CVE-2023-25725)

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/cve/CVE-2023-0056");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2023-25725");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2023:1978");
  script_set_attribute(attribute:"solution", value:
"Update the RHEL haproxy package based on the guidance in RHSA-2023:1978.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/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:N/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-2023-25725");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(400, 444);
  script_set_attribute(attribute:"vendor_severity", value:"Moderate");

  script_set_attribute(attribute:"vuln_publication_date", value:"2023/02/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/04/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/04/25");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:rhel_e4s:9.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:rhel_eus:9.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:haproxy");
  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) 2023-2024 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(operator: 'eq', os_version: os_ver, rhel_version: '9.0')) audit(AUDIT_OS_NOT, 'Red Hat 9.0', '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/e4s/rhel9/9.0/aarch64/appstream/debug',
      'content/e4s/rhel9/9.0/aarch64/appstream/os',
      'content/e4s/rhel9/9.0/aarch64/appstream/source/SRPMS',
      'content/e4s/rhel9/9.0/aarch64/baseos/debug',
      'content/e4s/rhel9/9.0/aarch64/baseos/os',
      'content/e4s/rhel9/9.0/aarch64/baseos/source/SRPMS',
      'content/e4s/rhel9/9.0/aarch64/highavailability/debug',
      'content/e4s/rhel9/9.0/aarch64/highavailability/os',
      'content/e4s/rhel9/9.0/aarch64/highavailability/source/SRPMS',
      'content/e4s/rhel9/9.0/ppc64le/appstream/debug',
      'content/e4s/rhel9/9.0/ppc64le/appstream/os',
      'content/e4s/rhel9/9.0/ppc64le/appstream/source/SRPMS',
      'content/e4s/rhel9/9.0/ppc64le/baseos/debug',
      'content/e4s/rhel9/9.0/ppc64le/baseos/os',
      'content/e4s/rhel9/9.0/ppc64le/baseos/source/SRPMS',
      'content/e4s/rhel9/9.0/ppc64le/highavailability/debug',
      'content/e4s/rhel9/9.0/ppc64le/highavailability/os',
      'content/e4s/rhel9/9.0/ppc64le/highavailability/source/SRPMS',
      'content/e4s/rhel9/9.0/ppc64le/resilientstorage/debug',
      'content/e4s/rhel9/9.0/ppc64le/resilientstorage/os',
      'content/e4s/rhel9/9.0/ppc64le/resilientstorage/source/SRPMS',
      'content/e4s/rhel9/9.0/ppc64le/sap-solutions/debug',
      'content/e4s/rhel9/9.0/ppc64le/sap-solutions/os',
      'content/e4s/rhel9/9.0/ppc64le/sap-solutions/source/SRPMS',
      'content/e4s/rhel9/9.0/ppc64le/sap/debug',
      'content/e4s/rhel9/9.0/ppc64le/sap/os',
      'content/e4s/rhel9/9.0/ppc64le/sap/source/SRPMS',
      'content/e4s/rhel9/9.0/s390x/appstream/debug',
      'content/e4s/rhel9/9.0/s390x/appstream/os',
      'content/e4s/rhel9/9.0/s390x/appstream/source/SRPMS',
      'content/e4s/rhel9/9.0/s390x/baseos/debug',
      'content/e4s/rhel9/9.0/s390x/baseos/os',
      'content/e4s/rhel9/9.0/s390x/baseos/source/SRPMS',
      'content/e4s/rhel9/9.0/s390x/highavailability/debug',
      'content/e4s/rhel9/9.0/s390x/highavailability/os',
      'content/e4s/rhel9/9.0/s390x/highavailability/source/SRPMS',
      'content/e4s/rhel9/9.0/s390x/resilientstorage/debug',
      'content/e4s/rhel9/9.0/s390x/resilientstorage/os',
      'content/e4s/rhel9/9.0/s390x/resilientstorage/source/SRPMS',
      'content/e4s/rhel9/9.0/s390x/sap/debug',
      'content/e4s/rhel9/9.0/s390x/sap/os',
      'content/e4s/rhel9/9.0/s390x/sap/source/SRPMS',
      'content/e4s/rhel9/9.0/x86_64/appstream/debug',
      'content/e4s/rhel9/9.0/x86_64/appstream/os',
      'content/e4s/rhel9/9.0/x86_64/appstream/source/SRPMS',
      'content/e4s/rhel9/9.0/x86_64/baseos/debug',
      'content/e4s/rhel9/9.0/x86_64/baseos/os',
      'content/e4s/rhel9/9.0/x86_64/baseos/source/SRPMS',
      'content/e4s/rhel9/9.0/x86_64/highavailability/debug',
      'content/e4s/rhel9/9.0/x86_64/highavailability/os',
      'content/e4s/rhel9/9.0/x86_64/highavailability/source/SRPMS',
      'content/e4s/rhel9/9.0/x86_64/nfv/debug',
      'content/e4s/rhel9/9.0/x86_64/nfv/os',
      'content/e4s/rhel9/9.0/x86_64/nfv/source/SRPMS',
      'content/e4s/rhel9/9.0/x86_64/resilientstorage/debug',
      'content/e4s/rhel9/9.0/x86_64/resilientstorage/os',
      'content/e4s/rhel9/9.0/x86_64/resilientstorage/source/SRPMS',
      'content/e4s/rhel9/9.0/x86_64/rt/debug',
      'content/e4s/rhel9/9.0/x86_64/rt/os',
      'content/e4s/rhel9/9.0/x86_64/rt/source/SRPMS',
      'content/e4s/rhel9/9.0/x86_64/sap-solutions/debug',
      'content/e4s/rhel9/9.0/x86_64/sap-solutions/os',
      'content/e4s/rhel9/9.0/x86_64/sap-solutions/source/SRPMS',
      'content/e4s/rhel9/9.0/x86_64/sap/debug',
      'content/e4s/rhel9/9.0/x86_64/sap/os',
      'content/e4s/rhel9/9.0/x86_64/sap/source/SRPMS',
      'content/eus/rhel9/9.0/aarch64/appstream/debug',
      'content/eus/rhel9/9.0/aarch64/appstream/os',
      'content/eus/rhel9/9.0/aarch64/appstream/source/SRPMS',
      'content/eus/rhel9/9.0/aarch64/baseos/debug',
      'content/eus/rhel9/9.0/aarch64/baseos/os',
      'content/eus/rhel9/9.0/aarch64/baseos/source/SRPMS',
      'content/eus/rhel9/9.0/aarch64/codeready-builder/debug',
      'content/eus/rhel9/9.0/aarch64/codeready-builder/os',
      'content/eus/rhel9/9.0/aarch64/codeready-builder/source/SRPMS',
      'content/eus/rhel9/9.0/aarch64/highavailability/debug',
      'content/eus/rhel9/9.0/aarch64/highavailability/os',
      'content/eus/rhel9/9.0/aarch64/highavailability/source/SRPMS',
      'content/eus/rhel9/9.0/aarch64/supplementary/debug',
      'content/eus/rhel9/9.0/aarch64/supplementary/os',
      'content/eus/rhel9/9.0/aarch64/supplementary/source/SRPMS',
      'content/eus/rhel9/9.0/ppc64le/appstream/debug',
      'content/eus/rhel9/9.0/ppc64le/appstream/os',
      'content/eus/rhel9/9.0/ppc64le/appstream/source/SRPMS',
      'content/eus/rhel9/9.0/ppc64le/baseos/debug',
      'content/eus/rhel9/9.0/ppc64le/baseos/os',
      'content/eus/rhel9/9.0/ppc64le/baseos/source/SRPMS',
      'content/eus/rhel9/9.0/ppc64le/codeready-builder/debug',
      'content/eus/rhel9/9.0/ppc64le/codeready-builder/os',
      'content/eus/rhel9/9.0/ppc64le/codeready-builder/source/SRPMS',
      'content/eus/rhel9/9.0/ppc64le/highavailability/debug',
      'content/eus/rhel9/9.0/ppc64le/highavailability/os',
      'content/eus/rhel9/9.0/ppc64le/highavailability/source/SRPMS',
      'content/eus/rhel9/9.0/ppc64le/resilientstorage/debug',
      'content/eus/rhel9/9.0/ppc64le/resilientstorage/os',
      'content/eus/rhel9/9.0/ppc64le/resilientstorage/source/SRPMS',
      'content/eus/rhel9/9.0/ppc64le/sap-solutions/debug',
      'content/eus/rhel9/9.0/ppc64le/sap-solutions/os',
      'content/eus/rhel9/9.0/ppc64le/sap-solutions/source/SRPMS',
      'content/eus/rhel9/9.0/ppc64le/sap/debug',
      'content/eus/rhel9/9.0/ppc64le/sap/os',
      'content/eus/rhel9/9.0/ppc64le/sap/source/SRPMS',
      'content/eus/rhel9/9.0/ppc64le/supplementary/debug',
      'content/eus/rhel9/9.0/ppc64le/supplementary/os',
      'content/eus/rhel9/9.0/ppc64le/supplementary/source/SRPMS',
      'content/eus/rhel9/9.0/s390x/appstream/debug',
      'content/eus/rhel9/9.0/s390x/appstream/os',
      'content/eus/rhel9/9.0/s390x/appstream/source/SRPMS',
      'content/eus/rhel9/9.0/s390x/baseos/debug',
      'content/eus/rhel9/9.0/s390x/baseos/os',
      'content/eus/rhel9/9.0/s390x/baseos/source/SRPMS',
      'content/eus/rhel9/9.0/s390x/codeready-builder/debug',
      'content/eus/rhel9/9.0/s390x/codeready-builder/os',
      'content/eus/rhel9/9.0/s390x/codeready-builder/source/SRPMS',
      'content/eus/rhel9/9.0/s390x/highavailability/debug',
      'content/eus/rhel9/9.0/s390x/highavailability/os',
      'content/eus/rhel9/9.0/s390x/highavailability/source/SRPMS',
      'content/eus/rhel9/9.0/s390x/resilientstorage/debug',
      'content/eus/rhel9/9.0/s390x/resilientstorage/os',
      'content/eus/rhel9/9.0/s390x/resilientstorage/source/SRPMS',
      'content/eus/rhel9/9.0/s390x/sap/debug',
      'content/eus/rhel9/9.0/s390x/sap/os',
      'content/eus/rhel9/9.0/s390x/sap/source/SRPMS',
      'content/eus/rhel9/9.0/s390x/supplementary/debug',
      'content/eus/rhel9/9.0/s390x/supplementary/os',
      'content/eus/rhel9/9.0/s390x/supplementary/source/SRPMS',
      'content/eus/rhel9/9.0/x86_64/appstream/debug',
      'content/eus/rhel9/9.0/x86_64/appstream/os',
      'content/eus/rhel9/9.0/x86_64/appstream/source/SRPMS',
      'content/eus/rhel9/9.0/x86_64/baseos/debug',
      'content/eus/rhel9/9.0/x86_64/baseos/os',
      'content/eus/rhel9/9.0/x86_64/baseos/source/SRPMS',
      'content/eus/rhel9/9.0/x86_64/codeready-builder/debug',
      'content/eus/rhel9/9.0/x86_64/codeready-builder/os',
      'content/eus/rhel9/9.0/x86_64/codeready-builder/source/SRPMS',
      'content/eus/rhel9/9.0/x86_64/highavailability/debug',
      'content/eus/rhel9/9.0/x86_64/highavailability/os',
      'content/eus/rhel9/9.0/x86_64/highavailability/source/SRPMS',
      'content/eus/rhel9/9.0/x86_64/resilientstorage/debug',
      'content/eus/rhel9/9.0/x86_64/resilientstorage/os',
      'content/eus/rhel9/9.0/x86_64/resilientstorage/source/SRPMS',
      'content/eus/rhel9/9.0/x86_64/sap-solutions/debug',
      'content/eus/rhel9/9.0/x86_64/sap-solutions/os',
      'content/eus/rhel9/9.0/x86_64/sap-solutions/source/SRPMS',
      'content/eus/rhel9/9.0/x86_64/sap/debug',
      'content/eus/rhel9/9.0/x86_64/sap/os',
      'content/eus/rhel9/9.0/x86_64/sap/source/SRPMS',
      'content/eus/rhel9/9.0/x86_64/supplementary/debug',
      'content/eus/rhel9/9.0/x86_64/supplementary/os',
      'content/eus/rhel9/9.0/x86_64/supplementary/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'haproxy-2.4.7-2.el9_0.2', 'sp':'0', 'release':'9', 'rpm_spec_vers_cmp':TRUE}
    ]
  }
];

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;
    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 (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)) flag++;
  }
}

if (flag)
{
  var subscription_caveat = '\n' +
    'NOTE: This vulnerability check contains fixes that apply to\n' +
    'packages only available in the Red Hat Enterprise Linux\n' +
    'Extended Update Support or Update Services for SAP Solutions repositories.\n' +
    'Access to these repositories requires a paid RHEL subscription.\n';
  var extra = NULL;
  if (isnull(applicable_repo_urls) || !applicable_repo_urls) extra = subscription_caveat + rpm_report_get() + redhat_report_repo_caveat();
  else extra = subscription_caveat + 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, 'haproxy');
}