Gitea < 1.5.3 RCE Vulnerability

# SPDX-FileCopyrightText: 2018 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("1.3.6.1.4.1.25623.1.0.141677");
  script_version("2023-07-20T05:05:17+0000");
  script_tag(name:"last_modification", value:"2023-07-20 05:05:17 +0000 (Thu, 20 Jul 2023)");
  script_tag(name:"creation_date", value:"2018-11-13 11:33:35 +0700 (Tue, 13 Nov 2018)");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-01-29 14:23:00 +0000 (Tue, 29 Jan 2019)");

  script_cve_id("CVE-2018-18926");

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

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

  script_name("Gitea < 1.5.3 RCE Vulnerability");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2018 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 a remote code execution (RCE) vulnerability.");

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

  script_tag(name:"insight", value:"Gitea allows remote code execution because it does not properly
  validate session IDs. This is related to session ID handling in the go-macaron/session code for
  Macaron.");

  script_tag(name:"affected", value:"Gitea version 1.5.2 and prior.");

  script_tag(name:"solution", value:"Update to version 1.5.3 or later.");

  script_xref(name:"URL", value:"https://github.com/go-gitea/gitea/issues/5140");
  script_xref(name:"URL", value:"https://blog.gitea.io/2018/10/gitea-1.5.3-is-released/");

  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: "1.5.3")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "1.5.3");
  security_message(port: port, data: report);
  exit(0);
}

exit(0);