XWiki >= 11.4-rc-1, < 11.10.1, 12.x < 12.6.3, 12.7.x Privilege Escalation Vulnerability

# SPDX-FileCopyrightText: 2021 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

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.113800");
  script_version("2026-01-29T08:35:42+0000");
  script_tag(name:"last_modification", value:"2026-01-29 08:35:42 +0000 (Thu, 29 Jan 2026)");
  script_tag(name:"creation_date", value:"2021-03-15 11:29:02 +0000 (Mon, 15 Mar 2021)");
  script_tag(name:"cvss_base", value:"3.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:S/C:N/I:P/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2021-03-22 16:26:00 +0000 (Mon, 22 Mar 2021)");

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

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

  script_cve_id("CVE-2021-21379");

  script_name("XWiki >= 11.4-rc-1, < 11.10.1, 12.x < 12.6.3, 12.7.x Privilege Escalation Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2021 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_xwiki_http_detect.nasl");
  script_mandatory_keys("xwiki/detected");

  script_tag(name:"summary", value:"XWiki is prone to a privilege escalation vulnerability.");

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

  script_tag(name:"insight", value:"Using {{wikimacrocontent}}, a user may execute scripts
  in the context of the macro creator.");

  script_tag(name:"impact", value:"Successful exploitation would allow an authenticated attacker
  to gain privileges he has not been assigned.");

  script_tag(name:"affected", value:"XWiki versions 11.4-rc-1 through 11.10.0, 12.0.0 through 12.6.2 and 12.7.0 through 12.7.1.");

  script_tag(name:"solution", value:"Update to version 11.10.1, 12.6.3 or 12.8 respectively.");

  script_xref(name:"URL", value:"https://jira.xwiki.org/browse/XWIKI-17759");
  script_xref(name:"URL", value:"https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-v662-xpcc-9xf6");

  exit(0);
}

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

include( "host_details.inc" );
include( "version_func.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 ) ) exit( 0 );

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

if( version_in_range( version: version, test_version: "11.4", test_version2: "11.10.0" ) ) {
  report = report_fixed_ver( installed_version: version, fixed_version: "11.10.1", install_path: location );
  security_message( data: report, port: port );
  exit( 0 );
}

if( version_in_range( version: version, test_version: "12.0.0", test_version2: "12.6.2" ) ) {
  report = report_fixed_ver( installed_version: version, fixed_version: "12.6.3", install_path: location );
  security_message( data: report, port: port );
  exit( 0 );
}

if( version =~ "^12\.7($|\.)" ) {
  report = report_fixed_ver( installed_version: version, fixed_version: "12.8", install_path: location );
  security_message( data: report, port: port );
  exit( 0 );
}

exit( 99 );