Vulnerabilities > CVE-2015-1831 - Security Bypass vulnerability in Apache Struts 2.3.20

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(83487);
  script_version("1.12");
  script_cvs_date("Date: 2019/02/15 10:32:14");

  script_cve_id("CVE-2015-1831");

  script_name(english:"Apache Struts 2.3.20 Incorrect Default Exclude Pattern (S2-024)");
  script_summary(english:"Checks the Struts 2 version.");

  script_set_attribute(attribute:"synopsis", value:
"The remote web server hosts a web application that uses a Java
framework that contains incorrect default exclude patterns.");
  script_set_attribute(attribute:"description", value:
"The remote web server is using Apache Struts version 2.3.20. It is,
therefore, affected by an issue where the default exclude patterns are
incorrect when using default settings. This allows a remote attacker
to impact the internal application's state.

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/S2-024");

  script_set_attribute(attribute:"solution", value:
"Upgrade to Apache Struts version 2.3.20.1 or later.");
  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:L/I:L/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2015-1831");
  script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/05/06");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/05/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/05/15");

  script_set_attribute(attribute:"agent", value:"all");
  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:apache:struts");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}

include("vcf.inc");

if (report_paranoia < 2) audit(AUDIT_PARANOID);


app_info = vcf::combined_get_app_info(app:"Apache Struts");

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

constraints = [
  { "equal" : "2.3.20", "fixed_version" : "2.3.20.1" }
];

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