AlmaLinux 9.2 [TuxCare] Security Update: httpd / httpd-core / httpd-devel / httpd-filesystem / httpd-manual / etc Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1791538487)

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

include('compat.inc');

if (description)
{
  script_id(364432);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/09");

  script_cve_id(
    "CVE-2026-42356",
    "CVE-2026-42528",
    "CVE-2026-46729",
    "CVE-2026-47360",
    "CVE-2026-48005",
    "CVE-2026-56154",
    "CVE-2026-56449",
    "CVE-2026-58415",
    "CVE-2026-59797",
    "CVE-2026-63045",
    "CVE-2026-63292",
    "CVE-2026-63686",
    "CVE-2026-63718",
    "CVE-2026-73636",
    "CVE-2026-73637",
    "CVE-2026-79768",
    "CVE-2026-93546"
  );
  script_xref(name:"CLSA", value:"2026:1791538487");

  script_name(english:"AlmaLinux 9.2 [TuxCare] Security Update: httpd / httpd-core / httpd-devel / httpd-filesystem / httpd-manual / etc Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1791538487)");

  script_set_attribute(attribute:"synopsis", value:
"The AlmaLinux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare
ALMALINUX9.2:CLSA-2026:1791538487 advisory.

  - Deployment of wrong handler vulnerability in Apache HTTP Server allows the target of some internal
    redirects from CGI programs to also be treated as CGI and executed. The target must already be in a
    directory enabled for CGI and have no other extension understood by mod_mime. This issue affects Apache
    HTTP Server: from 2.4.60 through 2.4.68. (CVE-2026-42356)

  - A memory calculation bug in mod_dav in Apache httpd 2.4.67 and earlier allows an attacker with permission
    to create WebDAV locks to crash server child processes. Users are recommended to upgrade to version
    2.4.69, which fixes this issue (CVE-2026-42528)

  - NULL Pointer Dereference vulnerability in Apache HTTP Servers mod_heartmonitor over unicast listener. This
    issue affects Apache HTTP Server: from 2.4.0 through 2.4.68. (CVE-2026-46729)

  - Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache HTTP Server's
    mod_session_cookie module. When SessionCookieRemove changes across internal redirects, the session cookie
    may still be passed to a backend server. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.
    (CVE-2026-47360)

  - Missing authentication checks in mod_auth_digest in Apache Software Foundation Apache HTTP Server before
    2.4.69 on all platforms allows an unauthenticated remote client to cause a denial of service (forced re-
    authentication) via forged Authorization headers when Digest authentication is enabled with
    AuthDigestNcCheck . Users are recommended to upgrade to version 2.4.69, which fixes this issue.
    (CVE-2026-48005)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  # https://security.tuxcare.com/csaf/v2/els_os/almalinux9.2esu/advisories/2026/clsa-2026_1791538487.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?42281bb1");
  script_set_attribute(attribute:"see_also", value:"https://cve.tuxcare.com/els/releases/CLSA-2026:1791538487");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages based on the guidance in TuxCare advisory ALMALINUX9.2:CLSA-2026:1791538487.");
  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:"cvss_score_source", value:"CVE-2026-59797");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"vendor_severity", value:"Important");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/10/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/10/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/09");

  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:"^9.2([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'AlmaLinux 9.2', '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 ('aarch64' >!< cpu && cpu !~ "^i[3-6]86$" && 'x86_64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'AlmaLinux', cpu);


var constraints = [
  {
    'release': '9',
    'sp': '2',
    'pkgs': [
      {'reference':'httpd-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'cpu':'aarch64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'cpu':'i686', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd-core-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'cpu':'aarch64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd-core-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'cpu':'i686', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd-core-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd-devel-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'cpu':'aarch64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd-devel-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'cpu':'i686', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd-devel-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd-filesystem-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd-manual-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd-tools-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'cpu':'aarch64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd-tools-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'cpu':'i686', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd-tools-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_ldap-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'cpu':'aarch64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_ldap-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'cpu':'i686', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_ldap-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_lua-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'cpu':'aarch64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_lua-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'cpu':'i686', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_lua-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_proxy_html-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'cpu':'aarch64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'mod_proxy_html-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'cpu':'i686', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'mod_proxy_html-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'mod_session-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'cpu':'aarch64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_session-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'cpu':'i686', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_session-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_ssl-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'cpu':'aarch64', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'mod_ssl-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'cpu':'i686', 'el_string':'el9_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'mod_ssl-2.4.53-11.el9_2.5.tuxcare.els25', 'sp':'2', 'cpu':'x86_64', 'el_string':'el9_2', '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, 'httpd / httpd-core / httpd-devel / httpd-filesystem / httpd-manual / etc');
}