Apache Struts < 2.5.31 / 6.1.2.1 Denial of Service (S2-064)

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

include('compat.inc');

if (description)
{
  script_id(177225);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/09/21");

  script_cve_id("CVE-2023-34396");
  script_xref(name:"IAVA", value:"2023-A-0287-S");

  script_name(english:"Apache Struts < 2.5.31 / 6.1.2.1 Denial of Service (S2-064)");

  script_set_attribute(attribute:"synopsis", value:
"Apache Struts installed on the remote host is affected by Denial of Service vulnerability");
  script_set_attribute(attribute:"description", value:
"The version of Apache Struts installed on the remote host is prior to 2.5.31 or 6.1.2.1. It is, therefore, affected by a
vulnerability as referenced in the S2-064 advisory.

  - When a Multipart request has non-file normal form fields, Struts used to bring them into memory as Strings
    without checking their sizes. This could lead to OOM if developer has set struts.multipart.maxSize to a
    value equal or greater than the available memory. (CVE-2023-34396)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://cwiki.apache.org/confluence/display/WW/S2-064");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Apache Struts version 2.5.31, 6.1.2.1 or later. Alternatively, apply the workaround as referenced in in the vendor's
security bulletin");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  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:N/I:N/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-2023-34396");

  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:"2023/06/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/06/13");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:apache:struts");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("os_fingerprint.nasl", "struts_detect_win.nbin", "struts_detect_nix.nbin");
  script_require_ports("installed_sw/Apache Struts", "installed_sw/Struts");

  exit(0);
}

include('vcf.inc');

var os = get_kb_item_or_exit('Host/OS');
var win_local = ('windows' >< tolower(os));

var app_info = vcf::get_app_info(app:'Apache Struts', win_local:win_local);

vcf::check_granularity(app_info:app_info, sig_segments:3);

var constraints = [
  { 'min_version' : '2.0.0', 'max_version' : '2.5.30', 'fixed_version': '2.5.31'  },
  { 'min_version' : '6.0.0', 'max_version' : '6.1.2', 'fixed_version' : '6.1.2.1' }
];

vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_HOLE);