AlmaLinux 9.6 [TuxCare] Security Update: tomcat / tomcat-admin-webapps / tomcat-docs-webapp / etc (ALMALINUX9.6:CLSA-2026:1774442729)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(361575);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/01");

  script_cve_id("CVE-2026-24734");
  script_xref(name:"CLSA", value:"2026:1774442729");

  script_name(english:"AlmaLinux 9.6 [TuxCare] Security Update: tomcat / tomcat-admin-webapps / tomcat-docs-webapp / etc (ALMALINUX9.6:CLSA-2026:1774442729)");

  script_set_attribute(attribute:"synopsis", value:
"The AlmaLinux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The AlmaLinux 9.6 host has packages installed that are affected by a vulnerability as referenced in the TuxCare
ALMALINUX9.6:CLSA-2026:1774442729 advisory.

  - Improper Input Validation vulnerability in Apache Tomcat Native, Apache Tomcat. When using an OCSP
    responder, Tomcat Native (and Tomcat's FFM port of the Tomcat Native code) did not complete verification
    or freshness checks on the OCSP response which could allow certificate revocation to be bypassed. This
    issue affects Apache Tomcat Native: from 1.3.0 through 1.3.4, from 2.0.0 through 2.0.11; Apache Tomcat:
    from 11.0.0-M1 through 11.0.17, from 10.1.0-M7 through 10.1.51, from 9.0.83 through 9.0.114. The following
    versions were EOL at the time the CVE was created but are known to be affected: from 1.1.23 through
    1.1.34, from 1.2.0 through 1.2.39. Older EOL versions are not affected. Apache Tomcat Native users are
    recommended to upgrade to versions 1.3.5 or later or 2.0.12 or later, which fix the issue. Apache Tomcat
    users are recommended to upgrade to versions 11.0.18 or later, 10.1.52 or later or 9.0.115 or later which
    fix the issue. (CVE-2026-24734)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://security.tuxcare.com/csaf/v2/els_os/tuxcare9.6esu/advisories/2026/clsa-2026_1774442729.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?2001e418");
  script_set_attribute(attribute:"see_also", value:"https://cve.tuxcare.com/els/releases/CLSA-2026:1774442729");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages based on the guidance in TuxCare advisory ALMALINUX9.6:CLSA-2026:1774442729.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:C/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/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:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-24734");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_set_attribute(attribute:"vendor_severity", value:"Important");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/01/23");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/03/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/01");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Alma Linux 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_info2.nasl");
  script_require_keys("Host/OS/extended-third-party", "Host/local_checks_enabled", "Host/AlmaLinux/release", "Host/AlmaLinux/rpm-list", "Host/cpu");

  exit(0);
}
include('rpm2.inc');

var third_party_support = get_kb_item('Host/OS/extended-third-party');
if (empty_or_null(third_party_support) || third_party_support != 'TuxCare') exit(0, 'TuxCare support not enabled.');

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) || 'AlmaLinux' >!< os_product) audit(AUDIT_OS_NOT, 'AlmaLinux');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'AlmaLinux');
if (! preg(pattern:"^9.6([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'AlmaLinux 9.6', 'AlmaLinux ' + os_version);

if (!get_kb_item('Host/AlmaLinux/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) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'AlmaLinux', cpu);


var constraints = [
  {
    'release': '9',
    'sp': '6',
    'pkgs': [
      {'reference':'tomcat-9.0.87-3.el9_6.3.tuxcare.els4', 'sp':'6', 'el_string':'el9_6', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'tomcat-admin-webapps-9.0.87-3.el9_6.3.tuxcare.els4', 'sp':'6', 'el_string':'el9_6', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'tomcat-docs-webapp-9.0.87-3.el9_6.3.tuxcare.els4', 'sp':'6', 'el_string':'el9_6', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'tomcat-el-3.0-api-9.0.87-3.el9_6.3.tuxcare.els4', 'sp':'6', 'el_string':'el9_6', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'tomcat-jsp-2.3-api-9.0.87-3.el9_6.3.tuxcare.els4', 'sp':'6', 'el_string':'el9_6', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'tomcat-lib-9.0.87-3.el9_6.3.tuxcare.els4', 'sp':'6', 'el_string':'el9_6', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'tomcat-servlet-4.0-api-9.0.87-3.el9_6.3.tuxcare.els4', 'sp':'6', 'el_string':'el9_6', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'tomcat-webapps-9.0.87-3.el9_6.3.tuxcare.els4', 'sp':'6', 'el_string':'el9_6', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'}
    ]
  }
];

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 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;
  }
  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 &&
        ## (no known rpm to check OR known rpm_exists)
        (!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)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : rpm_report_get()
  );
  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');
}