Oracle Linux 8 : httpd:2.4 (ELSA-2026-92616)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2026-92616.
##

include('compat.inc');

if (description)
{
  script_id(374438);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/31");

  script_cve_id(
    "CVE-2026-33006",
    "CVE-2026-46729",
    "CVE-2026-48005",
    "CVE-2026-56153",
    "CVE-2026-56154",
    "CVE-2026-63045",
    "CVE-2026-63292",
    "CVE-2026-63686",
    "CVE-2026-63718",
    "CVE-2026-73636",
    "CVE-2026-73637",
    "CVE-2026-93546"
  );

  script_name(english:"Oracle Linux 8 : httpd:2.4 (ELSA-2026-92616)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Oracle Linux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the
ELSA-2026-92616 advisory.

    - Resolves: RHEL-173558 - httpd:2.4/httpd: Apache HTTP Server mod_proxy_ajp:
      Arbitrary code execution via heap-based buffer overflow (CVE-2026-28780)
    - Resolves: RHEL-175074 - httpd:2.4/httpd: NULL pointer dereference can
      cause a child process crash (CVE-2026-33007)
    - Resolves: RHEL-175088 - httpd:2.4/httpd: off-by-one out-of-bounds reads
      in AJP getter functions (CVE-2026-33857)
    - Resolves: RHEL-175620 - httpd:2.4/httpd: NULL pointer dereference via
      specially crafted request (CVE-2026-29169)
    - Resolves: RHEL-175055 - httpd: heap-based buffer over-read and memory
      disclosure in ajp_parse_data() (CVE-2026-34059)

    mod_http2
    mod_md

Tenable has extracted the preceding description block directly from the Oracle 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://linux.oracle.com/errata/ELSA-2026-92616.html");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  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-2026-56154");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/05/04");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/10/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/31");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:httpd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:httpd-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:httpd-filesystem");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:httpd-manual");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:httpd-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:mod_http2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:mod_ldap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:mod_md");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:mod_proxy_html");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:mod_session");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:mod_ssl");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Oracle 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/OracleLinux", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/local_checks_enabled");

  exit(0);
}


include('rpm2.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) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:os_product)) audit(AUDIT_OS_NOT, 'Oracle Linux');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'Oracle Linux');
if (! preg(pattern:"^8([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'Oracle Linux 8.x', 'Oracle Linux ' + 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$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Oracle Linux', cpu);

var module_ver = get_kb_item('Host/RedHat/appstream/httpd');
if (isnull(module_ver)) audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Module httpd:2.4');
if ('2.4' >!< module_ver) audit(AUDIT_PACKAGE_NOT_AFFECTED, 'Module httpd:' + module_ver);

var constraints = {
  'httpd:2.4': [
    {
      'release': '8',
      'pkgs': [
        {'reference':'httpd-2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'httpd-devel-2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'httpd-filesystem-2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'httpd-manual-2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'httpd-tools-2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'mod_http2-1.15.7-10.module+el8.10.0+91023+3994037c.7', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'mod_ldap-2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'mod_md-2.0.8-8.module+el8.10.0+91092+d4ec9ae3.4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
        {'reference':'mod_proxy_html-2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
        {'reference':'mod_session-2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'mod_ssl-2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
        {'reference':'httpd-2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'httpd-devel-2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'httpd-filesystem-2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'httpd-manual-2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'httpd-tools-2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'mod_http2-1.15.7-10.module+el8.10.0+91023+3994037c.7', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'mod_ldap-2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'mod_md-2.0.8-8.module+el8.10.0+91092+d4ec9ae3.4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
        {'reference':'mod_proxy_html-2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
        {'reference':'mod_session-2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
        {'reference':'mod_ssl-2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8', 'cpu':'x86_64', '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;
var appstreams_found = 0;
var appstream;
var appstream_name;
var appstream_version;
foreach var module (keys(constraints)) {
  appstream = NULL;
  appstream_name = NULL;
  appstream_version = NULL;
  appstream_split = split(module, sep:':', keep:FALSE);
  if (!empty_or_null(appstream_split)) {
    appstream_name = appstream_split[0];
    appstream_version = appstream_split[1];
    if (!empty_or_null(appstream_name)) appstream = get_one_kb_item('Host/RedHat/appstream/' + appstream_name);
  }
  if (!empty_or_null(appstream) && appstream_version == appstream || appstream_name == 'all') {
    appstreams_found++;
    foreach var module_array ( constraints[module] ) {
      # Check that the target release is equal to the affected release
      if (!empty_or_null(module_array['release'])){
        if (module_array['release'] != os_release) continue;
      }
      if (!empty_or_null(module_array['sp'])){
        if (module_array['sp'] != os_sp) continue;
      }
      foreach var package_array ( module_array['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(package_array['reference'])) reference = package_array['reference'];
        if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
        if (!empty_or_null(package_array['cpu'])) _cpu = package_array['cpu'];
        if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];
        if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
        if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
        if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
        if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
        if (!empty_or_null(package_array['cves'])) cves = package_array['cves'];
        if (reference &&
            (!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 (!appstreams_found) audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Module httpd:2.4');

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-devel / httpd-filesystem / etc');
}