TencentOS Server 3: httpd:2.4 (TSSA-2026:0425)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Tencent Linux Security Advisory TSSA-2026:0425.
##

include('compat.inc');

if (description)
{
  script_id(318557);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/06/03");

  script_cve_id(
    "CVE-2025-53020",
    "CVE-2026-28780",
    "CVE-2026-33007",
    "CVE-2026-33857",
    "CVE-2026-34032",
    "CVE-2026-34059"
  );

  script_name(english:"TencentOS Server 3: httpd:2.4 (TSSA-2026:0425)");

  script_set_attribute(attribute:"synopsis", value:
"The remote TencentOS Server 3 host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is,
therefore, affected by multiple vulnerabilities as referenced in the TSSA-2026:0425 advisory.

    Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:

    CVE-2025-53020:
    Late Release of Memory after Effective Lifetime vulnerability in Apache HTTP Server.

    This issue affects Apache HTTP Server: from 2.4.17 up to 2.4.63.

    Users are recommended to upgrade to version 2.4.64, which fixes the issue.

    CVE-2026-28780:
    Heap-based Buffer Overflow vulnerability in mod_proxy_ajp of Apache HTTP Server.
    If mod_proxy_ajp connects to a malicious AJP server this AJP server can send a malicious AJP message back
    to mod_proxy_ajp and cause it to write 4 attacker controlled bytes after the end of a heap based buffer.

    This issue affects Apache HTTP Server: through 2.4.66.

    Users are recommended to upgrade to version 2.4.67, which fixes the issue.

    CVE-2026-33007:
    A NULL pointer dereference in the mod_authn_socache in Apache HTTP Server 2.4.66 and earlier allows an
    unauthenticated remote user to crash a child process in a caching forward proxy configuration.

    Users are recommended to upgrade to version 2.4.67, which fixes this issue.

    CVE-2026-33857:
    Out-of-bounds Read vulnerability in mod_proxy_ajp of

    Apache HTTP Server.

    This issue affects Apache HTTP Server: through 2.4.66.

    Users are recommended to upgrade to version 2.4.67, which fixes the issue.

    CVE-2026-34032:
    Improper Null Termination, Out-of-bounds Read vulnerability in Apache HTTP Server.

    This issue affects Apache HTTP Server: through 2.4.66.

    Users are recommended to upgrade to version 2.4.67, which fixes the issue.

    CVE-2026-34059:
    Buffer Over-read vulnerability in Apache HTTP Server.

    This issue affects Apache HTTP Server: through 2.4.66.

    Users are recommended to upgrade to version 2.4.67, which fixes the issue.

Tenable has extracted the preceding description block directly from the Tencent 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://mirrors.tencent.com/tlinux/errata/tssa-20260425.xml");
  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-2026-28780");

  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:"2025/07/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/06/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/06/03");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:tencent:tencentos_server:3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:tencent:tencentos_server:httpd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:tencent:tencentos_server:mod_http2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:tencent:tencentos_server:mod_md");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Tencent 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/local_checks_enabled", "Host/etc/os-release", "Host/TencentOS/rpm-list", "Host/cpu");

  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) || 'TencentOS' >!< os_product) audit(AUDIT_OS_NOT, 'TencentOS');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'TencentOS');
if (! preg(pattern:"^3([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'TencentOS 3.x', 'TencentOS ' + os_version);

if (!get_kb_item('Host/TencentOS/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, 'TencentOS', cpu);

var constraints = [
  {
    'release': '3',
    'pkgs': [
      {'reference':'httpd-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd-debuginfo-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd-debuginfo-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd-debugsource-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd-debugsource-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd-devel-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd-devel-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd-filesystem-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd-manual-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd-tools-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd-tools-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd-tools-debuginfo-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'httpd-tools-debuginfo-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_http2-1.15.7-10.module+el8.10.0+673+2d55fd1f', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_http2-1.15.7-10.module+el8.10.0+673+2d55fd1f', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_http2-debuginfo-1.15.7-10.module+el8.10.0+673+2d55fd1f', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_http2-debuginfo-1.15.7-10.module+el8.10.0+673+2d55fd1f', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_http2-debugsource-1.15.7-10.module+el8.10.0+673+2d55fd1f', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_http2-debugsource-1.15.7-10.module+el8.10.0+673+2d55fd1f', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_ldap-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_ldap-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_ldap-debuginfo-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_ldap-debuginfo-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_md-2.0.8-8.module+el8.10.0+673+2d55fd1f', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'mod_md-2.0.8-8.module+el8.10.0+673+2d55fd1f', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'mod_md-debuginfo-2.0.8-8.module+el8.10.0+673+2d55fd1f', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'mod_md-debuginfo-2.0.8-8.module+el8.10.0+673+2d55fd1f', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'mod_md-debugsource-2.0.8-8.module+el8.10.0+673+2d55fd1f', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'mod_md-debugsource-2.0.8-8.module+el8.10.0+673+2d55fd1f', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'mod_proxy_html-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'mod_proxy_html-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'mod_proxy_html-debuginfo-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'mod_proxy_html-debuginfo-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'mod_session-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_session-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_session-debuginfo-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_session-debuginfo-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_ssl-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'mod_ssl-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'mod_ssl-debuginfo-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
      {'reference':'mod_ssl-debuginfo-2.4.37-65.module+el8.10.0+673+2d55fd1f.2', '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;
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-debuginfo / httpd-debugsource / etc');
}