TYPO3 'rsaauth' extension Authentication Bypass Vulnerability (SA-2015-001)

# SPDX-FileCopyrightText: 2015 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-or-later

CPE = "cpe:/a:typo3:typo3";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.805295");
  script_version("2023-04-05T10:19:45+0000");
  script_cve_id("CVE-2015-2047");
  script_tag(name:"cvss_base", value:"2.6");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:H/Au:N/C:N/I:P/A:N");
  script_tag(name:"last_modification", value:"2023-04-05 10:19:45 +0000 (Wed, 05 Apr 2023)");
  script_tag(name:"creation_date", value:"2015-03-02 18:06:26 +0530 (Mon, 02 Mar 2015)");
  script_name("TYPO3 'rsaauth' extension Authentication Bypass Vulnerability (SA-2015-001)");

  script_tag(name:"summary", value:"TYPO3 is prone to an authentication bypass vulnerability.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");

  script_tag(name:"insight", value:"The flaw is in the system extension
  frontend in rsaauth that is triggered when handling logins");

  script_tag(name:"impact", value:"Successful exploitation will allow
  remote attackers to authenticate as a frontend user whose login name is known.");

  script_tag(name:"affected", value:"TYPO3 versions 4.3.0 through 4.3.14, 4.4.0
  through 4.4.15, 4.5.0 through 4.5.39, and 4.6.0 through 4.6.18");

  script_tag(name:"solution", value:"For 4.5.x series upgrade to TYPO3 version
  4.5.40 or later, for 4.3.x, 4.4.x and 4.6.x apply the patch as provided in the referenced vendor bulletin.");

  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"remote_banner_unreliable");
  script_xref(name:"URL", value:"https://review.typo3.org/#/c/37013");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/72763");
  script_xref(name:"URL", value:"https://typo3.org/security/advisory/typo3-core-sa-2015-001");

  script_category(ACT_GATHER_INFO);
  script_family("Web application abuses");
  script_copyright("Copyright (C) 2015 Greenbone AG");
  script_dependencies("gb_typo3_http_detect.nasl");
  script_mandatory_keys("typo3/detected");

  exit(0);
}

include("version_func.inc");
include("host_details.inc");

if(!port = get_app_port(cpe:CPE))
  exit(0);

if(!infos = get_app_version_and_location(cpe:CPE, port:port, exit_no_version:TRUE, version_regex:"[0-9]+\.[0-9]+\.[0-9]+")) # nb: Version might not be exact enough
  exit(0);

vers = infos["version"];
path = infos["location"];

if(vers =~ "^4\.5") {
  fix = "4.5.40";
  VULN = TRUE;
}

if(vers =~ "^4\.[34]") {
  fix = "Apply Patch";
  VULN = TRUE;
}

if(VULN) {
  report = report_fixed_ver(installed_version:vers, fixed_version:fix, install_path:path);
  security_message(port:port, data:report);
  exit(0);
}

exit(99);