TencentOS Server 4: jetty (TSSA-2025:0022)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Tencent Linux Security Advisory TSSA-2025:0022.
##

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

if (description)
{
  script_id(239462);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/11/20");

  script_cve_id("CVE-2023-36479", "CVE-2023-40167", "CVE-2023-41900");

  script_name(english:"TencentOS Server 4: jetty (TSSA-2025:0022)");

  script_set_attribute(attribute:"synopsis", value:
"The remote TencentOS Server 4 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 4 host is prior to tested version. It is,
therefore, affected by multiple vulnerabilities as referenced in the TSSA-2025:0022 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    CVE-2023-36479:
    Eclipse Jetty Canonical Repository is the canonical repository for the Jetty project. Users of the
    CgiServlet with a very specific command structure may have the wrong command executed. If a user sends a
    request to a org.eclipse.jetty.servlets.CGI Servlet for a binary with a space in its name, the servlet
    will escape the command by wrapping it in quotation marks. This wrapped command, plus an optional command
    prefix, will then be executed through a call to Runtime.exec. If the original binary name provided by the
    user contains a quotation mark followed by a space, the resulting command line will contain multiple
    tokens instead of one. This issue was patched in version 9.4.52, 10.0.16, 11.0.16 and 12.0.0-beta2.

    CVE-2023-40167:
    Jetty is a Java based web server and servlet engine. Versions 9.4.21 through 9.4.51, 10.0.15, and 11.0.15
    are vulnerable to weak authentication. If a Jetty `OpenIdAuthenticator` uses the optional nested
    `LoginService`, and that `LoginService` decides to revoke an already authenticated user, then the current
    request will still treat the user as authenticated. The authentication is then cleared from the session
    and subsequent requests will not be treated as authenticated. So a request on a previously authenticated
    session could be allowed to bypass authentication after it had been rejected by the `LoginService`. This
    impacts usages of the jetty-openid which have configured a nested `LoginService` and where that
    `LoginService` will is capable of rejecting previously authenticated users. Versions 9.4.52, 10.0.16, and
    11.0.16 have a patch for this issue.

    CVE-2023-41900:
    Jetty is a Java based web server and servlet engine. Prior to versions 9.4.52, 10.0.16, 11.0.16, and
    12.0.1, Jetty accepts the `+` character proceeding the content-length value in a HTTP/1 header field.
    This is more permissive than allowed by the RFC and other servers routinely reject such requests with 400
    responses.  There is no known exploit scenario, but it is conceivable that request smuggling could result
    if jetty is used in combination with a server that does not close the connection after sending such a 400
    response. Versions 9.4.52, 10.0.16, 11.0.16, and 12.0.1 contain a patch for this issue. There is no
    workaround as there is no known exploit scenario.

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-20250022.xml");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");
  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:N/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-40167");

  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:"2025/01/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/01/14");
  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:4");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:tencent:tencentos_server:jetty");
  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:"^4([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'TencentOS 4.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': '4',
    'pkgs': [
      {'reference':'jetty-9.4.40-4.tl4', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'jetty-client-9.4.40-4.tl4', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'jetty-continuation-9.4.40-4.tl4', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'jetty-http-9.4.40-4.tl4', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'jetty-io-9.4.40-4.tl4', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'jetty-jaas-9.4.40-4.tl4', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'jetty-javadoc-9.4.40-4.tl4', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'jetty-jmx-9.4.40-4.tl4', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'jetty-security-9.4.40-4.tl4', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'jetty-server-9.4.40-4.tl4', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'jetty-servlet-9.4.40-4.tl4', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'jetty-util-9.4.40-4.tl4', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'jetty-util-ajax-9.4.40-4.tl4', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'jetty-webapp-9.4.40-4.tl4', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'jetty-xml-9.4.40-4.tl4', '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, 'jetty / jetty-client / jetty-continuation / etc');
}