Apache Tomcat 11.0.0.M1 < 11.0.5

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

include('compat.inc');

if (description)
{
  script_id(323709);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/06/30");

  script_cve_id("CVE-2026-55957");

  script_name(english:"Apache Tomcat 11.0.0.M1 < 11.0.5");

  script_set_attribute(attribute:"synopsis", value:
"The remote Apache Tomcat server is affected by a vulnerability");
  script_set_attribute(attribute:"description", value:
"The version of Tomcat installed on the remote host is prior to 11.0.5. It is, therefore, affected by a vulnerability as
referenced in the fixed_in_apache_tomcat_11.0.5_security-11 advisory.

  - Missing Critical Step in Authentication vulnerability in Apache Tomcat when the JNDIRealm was configured
    to authenticate binds using GSSAPI allowed attackers to authenticate without provided the correct
    password. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.4, from 10.1.0-M1 through 10.1.36,
    from 9.0.0.M1 through 9.0.100, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Users are
    recommended to upgrade to version 11.0.5, 10.1.37 or 9.0.101, which fixes the issue. (CVE-2026-55957)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://github.com/apache/tomcat/commit/fd96ab415631eea44636c94f911dd38427070ef9
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?09c5c17c");
  # https://tomcat.apache.org/security-11.html#Fixed_in_Apache_Tomcat_11.0.5
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?71b43124");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Apache Tomcat version 11.0.5 or later.");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  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:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-55957");

  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:"2025/03/06");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/03/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/06/30");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:apache:tomcat:11");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Web Servers");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("os_fingerprint.nasl", "tomcat_error_version.nasl", "tomcat_win_installed.nbin", "apache_tomcat_nix_installed.nbin");
  script_require_keys("installed_sw/Apache Tomcat");

  exit(0);
}

include('vcf_extras.inc');

vcf::tomcat::initialize();
var app_info = vcf::combined_get_app_info(app:'Apache Tomcat');

var constraints = [
  { 'min_version' : '11.0.0.M1', 'max_version' : '11.0.4', 'fixed_version' : '11.0.5' }
];

vcf::check_all_backporting(app_info:app_info);
vcf::check_granularity(app_info:app_info, sig_segments:3);
vcf::check_version_and_report(
    app_info:app_info,
    constraints:constraints,
    severity:SECURITY_HOLE
);