TencentOS Server 3: mod_auth_openidc:2.3 (TSSA-2023:0283)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Tencent Linux Security Advisory TSSA-2023:0283.
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(238506);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/12/05");

  script_cve_id("CVE-2022-23527", "CVE-2023-28625");

  script_name(english:"TencentOS Server 3: mod_auth_openidc:2.3 (TSSA-2023:0283)");

  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-2023:0283 advisory.

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

      CVE-2022-23527:
      mod_auth_openidc is an OpenID Certified authentication and authorization module for the Apache 2.x
    HTTP server. Versions prior to 2.4.12.2 are vulnerable to Open Redirect. When providing a logout parameter
    to the redirect URI, the existing code in oidc_validate_redirect_url() does not properly check for URLs
    that start with /\t, leading to an open redirect. This issue has been patched in version 2.4.12.2. Users
    unable to upgrade can mitigate the issue by configuring mod_auth_openidc to only allow redirection when
    the destination matches a given regular expression with OIDCRedirectURLsAllowed.

      CVE-2023-28625:
      mod_auth_openidc is an authentication and authorization module for the Apache 2.x HTTP server that
    implements the OpenID Connect Relying Party functionality. In versions 2.0.0 through 2.4.13.1, when
    OIDCStripCookies is set and a crafted cookie supplied, a NULL pointer dereference would occur, resulting
    in a segmentation fault. This could be used in a Denial-of-Service attack and thus presents an
    availability risk. Version 2.4.13.2 contains a patch for this issue. As a workaround, avoid using
    OIDCStripCookies.

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-20230283.xml");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/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:R/S:C/C:L/I:L/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-2022-23527");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2023/12/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/12/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/06/16");

  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:cjose");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:tencent:tencentos_server:mod_auth_openidc");
  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) 2025 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':'cjose-0.6.1-4.module+el8.8.0+545+dbeb69ea', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'cjose-0.6.1-4.module+el8.8.0+545+dbeb69ea', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'cjose-debuginfo-0.6.1-4.module+el8.8.0+545+dbeb69ea', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'cjose-debuginfo-0.6.1-4.module+el8.8.0+545+dbeb69ea', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'cjose-debugsource-0.6.1-4.module+el8.8.0+545+dbeb69ea', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'cjose-debugsource-0.6.1-4.module+el8.8.0+545+dbeb69ea', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'cjose-devel-0.6.1-4.module+el8.8.0+545+dbeb69ea', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'cjose-devel-0.6.1-4.module+el8.8.0+545+dbeb69ea', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_auth_openidc-2.4.9.4-5.module+el8.8.0+545+dbeb69ea', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_auth_openidc-2.4.9.4-5.module+el8.8.0+545+dbeb69ea', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_auth_openidc-debuginfo-2.4.9.4-5.module+el8.8.0+545+dbeb69ea', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_auth_openidc-debuginfo-2.4.9.4-5.module+el8.8.0+545+dbeb69ea', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_auth_openidc-debugsource-2.4.9.4-5.module+el8.8.0+545+dbeb69ea', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_auth_openidc-debugsource-2.4.9.4-5.module+el8.8.0+545+dbeb69ea', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE}
    ]
  }
];

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_WARNING,
      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, 'cjose / cjose-debuginfo / cjose-debugsource / etc');
}