RHEL 10 : tomcat (RHSA-2026:67164)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2026:67164. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(345583);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/09/14");

  script_cve_id(
    "CVE-2026-32990",
    "CVE-2026-41293",
    "CVE-2026-42498",
    "CVE-2026-43512",
    "CVE-2026-43513",
    "CVE-2026-43515",
    "CVE-2026-55957"
  );
  script_xref(name:"RHSA", value:"2026:67164");

  script_name(english:"RHEL 10 : tomcat (RHSA-2026:67164)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates for tomcat.");
  script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as
referenced in the RHSA-2026:67164 advisory.

    Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.

    Security Fix(es):

    * Apache Tomcat: Apache Tomcat: Improper Input Validation vulnerability due to incomplete fix
    (CVE-2026-32990)

    * tomcat-coyote: Apache Tomcat: Authentication bypass via digest authentication (CVE-2026-43512)

    * tomcat-coyote: Apache Tomcat: HTTP/2 request headers not validated (CVE-2026-41293)

    * tomcat-coyote: Apache Tomcat: Information disclosure due to HTTP Authentication Header exposure during
    WebSocket authentication. (CVE-2026-42498)

    * tomcat-coyote: tomcat: Improper Authorization allows security bypass (CVE-2026-43515)

    * tomcat-catalina: Apache Tomcat: Improper Handling of Case Sensitivity in LockOutRealm (CVE-2026-43513)

    * tomcat: Apache Tomcat: Authentication bypass via missing critical step in JNDIRealm GSSAPI configuration
    (CVE-2026-55957)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and
    other related information, refer to the CVE page(s) listed in the References section.

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=2457025");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2476511");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2476513");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2476516");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2476519");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2476520");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2494669");
  # https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_67164.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?8963e035");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2026:67164");
  script_set_attribute(attribute:"solution", value:
"Update the RHEL tomcat package based on the guidance in RHSA-2026:67164.");
  script_set_cvss_base_vector("CVSS2#AV:N/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: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:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:P");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-43512");
  script_set_attribute(attribute:"cvss4_score_source", value:"CVE-2026-32990");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(178, 184, 201, 303, 305, 551, 1286);
  script_set_attribute(attribute:"vendor_severity", value:"Important");

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/03/06");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/09/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/09/14");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux_eus:10.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tomcat");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tomcat-admin-webapps");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tomcat-docs-webapp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tomcat-el-5.0-api");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tomcat-jsp-3.1-api");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tomcat-lib");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tomcat-servlet-6.0-api");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tomcat-webapps");
  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) 2026 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('rpm2.inc');
include('rhel.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_product = get_kb_item('installed_os/local/SSH/0/product');
if (isnull(os_product) || 'Red Hat' >!< os_product) audit(AUDIT_OS_NOT, 'Red Hat');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'Red Hat');
if (!rhel_check_release(operator: 'ge', os_version: os_version, rhel_version: '10')) audit(AUDIT_OS_NOT, 'Red Hat 10.x', 'Red Hat ' + os_version);

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 = [
  {
    'release': '10',
    'sp': '0',
    'repo_relative_urls': [
      'content/e4s/rhel10/10.0/aarch64/appstream/debug',
      'content/e4s/rhel10/10.0/aarch64/appstream/os',
      'content/e4s/rhel10/10.0/aarch64/appstream/source/SRPMS',
      'content/e4s/rhel10/10.0/aarch64/baseos/debug',
      'content/e4s/rhel10/10.0/aarch64/baseos/os',
      'content/e4s/rhel10/10.0/aarch64/baseos/source/SRPMS',
      'content/e4s/rhel10/10.0/aarch64/highavailability/debug',
      'content/e4s/rhel10/10.0/aarch64/highavailability/os',
      'content/e4s/rhel10/10.0/aarch64/highavailability/source/SRPMS',
      'content/e4s/rhel10/10.0/aarch64/rt/debug',
      'content/e4s/rhel10/10.0/aarch64/rt/os',
      'content/e4s/rhel10/10.0/aarch64/rt/source/SRPMS',
      'content/e4s/rhel10/10.0/ppc64le/appstream/debug',
      'content/e4s/rhel10/10.0/ppc64le/appstream/os',
      'content/e4s/rhel10/10.0/ppc64le/appstream/source/SRPMS',
      'content/e4s/rhel10/10.0/ppc64le/baseos/debug',
      'content/e4s/rhel10/10.0/ppc64le/baseos/os',
      'content/e4s/rhel10/10.0/ppc64le/baseos/source/SRPMS',
      'content/e4s/rhel10/10.0/ppc64le/highavailability/debug',
      'content/e4s/rhel10/10.0/ppc64le/highavailability/os',
      'content/e4s/rhel10/10.0/ppc64le/highavailability/source/SRPMS',
      'content/e4s/rhel10/10.0/ppc64le/sap-solutions/debug',
      'content/e4s/rhel10/10.0/ppc64le/sap-solutions/os',
      'content/e4s/rhel10/10.0/ppc64le/sap-solutions/source/SRPMS',
      'content/e4s/rhel10/10.0/ppc64le/sap/debug',
      'content/e4s/rhel10/10.0/ppc64le/sap/os',
      'content/e4s/rhel10/10.0/ppc64le/sap/source/SRPMS',
      'content/e4s/rhel10/10.0/s390x/appstream/debug',
      'content/e4s/rhel10/10.0/s390x/appstream/os',
      'content/e4s/rhel10/10.0/s390x/appstream/source/SRPMS',
      'content/e4s/rhel10/10.0/s390x/baseos/debug',
      'content/e4s/rhel10/10.0/s390x/baseos/os',
      'content/e4s/rhel10/10.0/s390x/baseos/source/SRPMS',
      'content/e4s/rhel10/10.0/s390x/highavailability/debug',
      'content/e4s/rhel10/10.0/s390x/highavailability/os',
      'content/e4s/rhel10/10.0/s390x/highavailability/source/SRPMS',
      'content/e4s/rhel10/10.0/s390x/sap/debug',
      'content/e4s/rhel10/10.0/s390x/sap/os',
      'content/e4s/rhel10/10.0/s390x/sap/source/SRPMS',
      'content/e4s/rhel10/10.0/x86_64/appstream/debug',
      'content/e4s/rhel10/10.0/x86_64/appstream/os',
      'content/e4s/rhel10/10.0/x86_64/appstream/source/SRPMS',
      'content/e4s/rhel10/10.0/x86_64/baseos/debug',
      'content/e4s/rhel10/10.0/x86_64/baseos/os',
      'content/e4s/rhel10/10.0/x86_64/baseos/source/SRPMS',
      'content/e4s/rhel10/10.0/x86_64/highavailability/debug',
      'content/e4s/rhel10/10.0/x86_64/highavailability/os',
      'content/e4s/rhel10/10.0/x86_64/highavailability/source/SRPMS',
      'content/e4s/rhel10/10.0/x86_64/nfv/debug',
      'content/e4s/rhel10/10.0/x86_64/nfv/os',
      'content/e4s/rhel10/10.0/x86_64/nfv/source/SRPMS',
      'content/e4s/rhel10/10.0/x86_64/rt/debug',
      'content/e4s/rhel10/10.0/x86_64/rt/os',
      'content/e4s/rhel10/10.0/x86_64/rt/source/SRPMS',
      'content/e4s/rhel10/10.0/x86_64/sap-solutions/debug',
      'content/e4s/rhel10/10.0/x86_64/sap-solutions/os',
      'content/e4s/rhel10/10.0/x86_64/sap-solutions/source/SRPMS',
      'content/e4s/rhel10/10.0/x86_64/sap/debug',
      'content/e4s/rhel10/10.0/x86_64/sap/os',
      'content/e4s/rhel10/10.0/x86_64/sap/source/SRPMS',
      'content/eus/rhel10/10.0/aarch64/appstream/debug',
      'content/eus/rhel10/10.0/aarch64/appstream/os',
      'content/eus/rhel10/10.0/aarch64/appstream/source/SRPMS',
      'content/eus/rhel10/10.0/aarch64/baseos/debug',
      'content/eus/rhel10/10.0/aarch64/baseos/os',
      'content/eus/rhel10/10.0/aarch64/baseos/source/SRPMS',
      'content/eus/rhel10/10.0/aarch64/codeready-builder/debug',
      'content/eus/rhel10/10.0/aarch64/codeready-builder/os',
      'content/eus/rhel10/10.0/aarch64/codeready-builder/source/SRPMS',
      'content/eus/rhel10/10.0/aarch64/highavailability/debug',
      'content/eus/rhel10/10.0/aarch64/highavailability/os',
      'content/eus/rhel10/10.0/aarch64/highavailability/source/SRPMS',
      'content/eus/rhel10/10.0/aarch64/rt/debug',
      'content/eus/rhel10/10.0/aarch64/rt/os',
      'content/eus/rhel10/10.0/aarch64/rt/source/SRPMS',
      'content/eus/rhel10/10.0/aarch64/supplementary/debug',
      'content/eus/rhel10/10.0/aarch64/supplementary/os',
      'content/eus/rhel10/10.0/aarch64/supplementary/source/SRPMS',
      'content/eus/rhel10/10.0/ppc64le/appstream/debug',
      'content/eus/rhel10/10.0/ppc64le/appstream/os',
      'content/eus/rhel10/10.0/ppc64le/appstream/source/SRPMS',
      'content/eus/rhel10/10.0/ppc64le/baseos/debug',
      'content/eus/rhel10/10.0/ppc64le/baseos/os',
      'content/eus/rhel10/10.0/ppc64le/baseos/source/SRPMS',
      'content/eus/rhel10/10.0/ppc64le/codeready-builder/debug',
      'content/eus/rhel10/10.0/ppc64le/codeready-builder/os',
      'content/eus/rhel10/10.0/ppc64le/codeready-builder/source/SRPMS',
      'content/eus/rhel10/10.0/ppc64le/highavailability/debug',
      'content/eus/rhel10/10.0/ppc64le/highavailability/os',
      'content/eus/rhel10/10.0/ppc64le/highavailability/source/SRPMS',
      'content/eus/rhel10/10.0/ppc64le/sap-solutions/debug',
      'content/eus/rhel10/10.0/ppc64le/sap-solutions/os',
      'content/eus/rhel10/10.0/ppc64le/sap-solutions/source/SRPMS',
      'content/eus/rhel10/10.0/ppc64le/sap/debug',
      'content/eus/rhel10/10.0/ppc64le/sap/os',
      'content/eus/rhel10/10.0/ppc64le/sap/source/SRPMS',
      'content/eus/rhel10/10.0/ppc64le/supplementary/debug',
      'content/eus/rhel10/10.0/ppc64le/supplementary/os',
      'content/eus/rhel10/10.0/ppc64le/supplementary/source/SRPMS',
      'content/eus/rhel10/10.0/s390x/appstream/debug',
      'content/eus/rhel10/10.0/s390x/appstream/os',
      'content/eus/rhel10/10.0/s390x/appstream/source/SRPMS',
      'content/eus/rhel10/10.0/s390x/baseos/debug',
      'content/eus/rhel10/10.0/s390x/baseos/os',
      'content/eus/rhel10/10.0/s390x/baseos/source/SRPMS',
      'content/eus/rhel10/10.0/s390x/codeready-builder/debug',
      'content/eus/rhel10/10.0/s390x/codeready-builder/os',
      'content/eus/rhel10/10.0/s390x/codeready-builder/source/SRPMS',
      'content/eus/rhel10/10.0/s390x/highavailability/debug',
      'content/eus/rhel10/10.0/s390x/highavailability/os',
      'content/eus/rhel10/10.0/s390x/highavailability/source/SRPMS',
      'content/eus/rhel10/10.0/s390x/sap/debug',
      'content/eus/rhel10/10.0/s390x/sap/os',
      'content/eus/rhel10/10.0/s390x/sap/source/SRPMS',
      'content/eus/rhel10/10.0/s390x/supplementary/debug',
      'content/eus/rhel10/10.0/s390x/supplementary/os',
      'content/eus/rhel10/10.0/s390x/supplementary/source/SRPMS',
      'content/eus/rhel10/10.0/x86_64/appstream/debug',
      'content/eus/rhel10/10.0/x86_64/appstream/os',
      'content/eus/rhel10/10.0/x86_64/appstream/source/SRPMS',
      'content/eus/rhel10/10.0/x86_64/baseos/debug',
      'content/eus/rhel10/10.0/x86_64/baseos/os',
      'content/eus/rhel10/10.0/x86_64/baseos/source/SRPMS',
      'content/eus/rhel10/10.0/x86_64/codeready-builder/debug',
      'content/eus/rhel10/10.0/x86_64/codeready-builder/os',
      'content/eus/rhel10/10.0/x86_64/codeready-builder/source/SRPMS',
      'content/eus/rhel10/10.0/x86_64/highavailability/debug',
      'content/eus/rhel10/10.0/x86_64/highavailability/os',
      'content/eus/rhel10/10.0/x86_64/highavailability/source/SRPMS',
      'content/eus/rhel10/10.0/x86_64/nfv/debug',
      'content/eus/rhel10/10.0/x86_64/nfv/os',
      'content/eus/rhel10/10.0/x86_64/nfv/source/SRPMS',
      'content/eus/rhel10/10.0/x86_64/rt/debug',
      'content/eus/rhel10/10.0/x86_64/rt/os',
      'content/eus/rhel10/10.0/x86_64/rt/source/SRPMS',
      'content/eus/rhel10/10.0/x86_64/sap-solutions/debug',
      'content/eus/rhel10/10.0/x86_64/sap-solutions/os',
      'content/eus/rhel10/10.0/x86_64/sap-solutions/source/SRPMS',
      'content/eus/rhel10/10.0/x86_64/sap/debug',
      'content/eus/rhel10/10.0/x86_64/sap/os',
      'content/eus/rhel10/10.0/x86_64/sap/source/SRPMS',
      'content/eus/rhel10/10.0/x86_64/supplementary/debug',
      'content/eus/rhel10/10.0/x86_64/supplementary/os',
      'content/eus/rhel10/10.0/x86_64/supplementary/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'tomcat-10.1.49-1.el10_0', 'sp':'0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'tomcat-admin-webapps-10.1.49-1.el10_0', 'sp':'0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'tomcat-docs-webapp-10.1.49-1.el10_0', 'sp':'0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'tomcat-el-5.0-api-10.1.49-1.el10_0', 'sp':'0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'tomcat-jsp-3.1-api-10.1.49-1.el10_0', 'sp':'0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'tomcat-lib-10.1.49-1.el10_0', 'sp':'0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'tomcat-servlet-6.0-api-10.1.49-1.el10_0', 'sp':'0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'tomcat-webapps-10.1.49-1.el10_0', 'sp':'0', '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 os_release = get_one_kb_item('installed_os/local/SSH/0/release');
var os_sp = get_one_kb_item('Host/*/minor_release');

var flag = 0;
var repo_relative_urls;
var reference;
var sp;
var _cpu;
var el_string;
var rpm_spec_vers_cmp;
var epoch;
var allowmaj;
var exists_check;
var cves;
foreach var constraint ( constraints ) {
  # Check that the target release is equal to the affected release
  if (!empty_or_null(constraint['release'])){
    if (constraint['release'] != os_release) continue;
  }
  if (!empty_or_null(constraint['sp'])){
    if (constraint['sp'] != os_sp) continue;
  }

  if (!empty_or_null(constraint['repo_relative_urls'])) repo_relative_urls = constraint['repo_relative_urls'];

  foreach var pkg ( constraint['pkgs'] ) {
    reference = NULL;
    sp = NULL;
    _cpu = NULL;
    el_string = NULL;
    rpm_spec_vers_cmp = NULL;
    epoch = NULL;
    allowmaj = NULL;
    exists_check = NULL;
    cves = NULL;
    if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];
    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 &&
        rhel_decide_repo_relative_url_check(required_repo_url_list:repo_relative_urls) &&
        (applicable_repo_urls || (!exists_check || rpm_exists(rpm:exists_check))) &&
        rpm_check(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, 'tomcat / tomcat-admin-webapps / tomcat-docs-webapp / etc');
}