Gitea < 1.6.3 Improper Access Control Vulnerability

# SPDX-FileCopyrightText: 2019 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-only

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

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.141957");
  script_version("2023-07-14T16:09:27+0000");
  script_tag(name:"last_modification", value:"2023-07-14 16:09:27 +0000 (Fri, 14 Jul 2023)");
  script_tag(name:"creation_date", value:"2019-02-05 09:55:39 +0700 (Tue, 05 Feb 2019)");
  script_tag(name:"cvss_base", value:"5.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:N/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2020-08-24 17:37:00 +0000 (Mon, 24 Aug 2020)");

  script_cve_id("CVE-2019-1000002");

  script_tag(name:"qod_type", value:"remote_banner");

  script_tag(name:"solution_type", value:"VendorFix");

  script_name("Gitea < 1.6.3 Improper Access Control Vulnerability");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2019 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_gitea_http_detect.nasl");
  script_mandatory_keys("gitea/detected");

  script_tag(name:"summary", value:"Gitea is prone to an improper access control vulnerability.");

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

  script_tag(name:"insight", value:"Gitea contains a Incorrect Access Control vulnerability in
  Delete/Edit file functionality that can result in the attacker deleting files outside the repository
  he/she has access to. This attack appears to be exploitable via the attacker must get write access
  to 'any' repository including self-created ones.");

  script_tag(name:"affected", value:"Gitea version 1.6.2 and prior.");

  script_tag(name:"solution", value:"Update to version 1.6.3 or later.");

  script_xref(name:"URL", value:"https://github.com/go-gitea/gitea/pull/5631");
  script_xref(name:"URL", value:"https://blog.gitea.io/2019/01/release-of-1.6.3/");

  exit(0);
}

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

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

if (!version = get_app_version(cpe: CPE, port: port))
  exit(0);

if (version_is_less(version: version, test_version: "1.6.3")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "1.6.3");
  security_message(port: port, data: report);
  exit(0);
}

exit(99);