Plex Media Server 1.41.7.x - 1.42.0.x Resource Transfer Vulnerability

# SPDX-FileCopyrightText: 2025 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:plex:plex_media_server";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.155198");
  script_version("2026-01-08T05:48:01+0000");
  script_tag(name:"last_modification", value:"2026-01-08 05:48:01 +0000 (Thu, 08 Jan 2026)");
  script_tag(name:"creation_date", value:"2025-08-22 03:54:47 +0000 (Fri, 22 Aug 2025)");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:C/I:P/A:N");

  script_cve_id("CVE-2025-34158");

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

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

  script_name("Plex Media Server 1.41.7.x - 1.42.0.x Resource Transfer Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2025 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_plex_media_server_http_detect.nasl");
  script_mandatory_keys("plex_media_server/detected");

  script_tag(name:"summary", value:"Plex Media Server is prone to an incorrect resource transfer
  vulnerability.");

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

  script_tag(name:"insight", value:"Plex Media Server (PMS) is affected by incorrect resource
  transfer between spheres because /myplex/account provides the credentials of the server owner
  (and a /api/resources call reveals other servers accessible by that server owner).");

  script_tag(name:"affected", value:"Plex Media Server version 1.41.7.x through 1.42.0.x.");

  script_tag(name:"solution", value:"Update to version 1.42.1 or later.");

  script_xref(name:"URL", value:"https://forums.plex.tv/t/plex-media-server-security-update/928341");
  script_xref(name:"URL", value:"https://github.com/lufinkey/vulnerability-research/blob/main/CVE-2025-34158/README.md");

  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_in_range_exclusive(version: version, test_version_lo: "1.41.7", test_version_up: "1.42.1")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "1.42.1");
  security_message(port: port, data: report);
  exit(0);
}

exit(99);